DMc150 Double Monodchromator

  • DMc150 compact double monochromator

Comprising twin 150mm focal length Czerny Turner single monochromators operating in tandem with additive dispersion, the DMc150 offers exceptional optical performance within a small footprint.

Compatible with the full range of sources, detectors and entrance optics of the Bentham portfolio, the DMc150 is at the heart of many of our light measurement solutions including those for:-

  • Type-testing of tanning appliances
  • Accurate dosimetry of sources used in phototherapy (including PDT and PUVA)
  • Monitoring of solar UV irradiance
  • NVIS compatibility testing

 

 

Benefits

 

 

 

Features

 

  • Comprises twin 150mm focal length monochromators
  • Built in a single casting, for optimised rigidity and robustness
  • Stepping motor and sine bar driven diffraction gratings
  • Predictable sinusoidal wavelength accuracy
  • One entrance and up to two exit ports with automated mirror-based port selection for use of multiple input/ output configurations
  • Control electronics integrated and fully automated via USB 2.0 interface

 

 

Optical Layout

Configuration

Pair symmetrical Czerny Turner monochromators, additive dispersion

Focal length

Total focal length: 300mm

Individual Units: 150mm

Grating mount

Kinematic

Number of gratings

1 pair

Grating size

33x33mm

Aperture ratio

f/4

Number of entrance/exit ports

1 entrance, 1-2 exits

Spectral range

Within range 200nm-2400nm

Opto-Mechanical

Wavelength scanning

By integrated stepping motor and micro-stepping drive electronics

Slit type

Fixed, micrometer or motorised variable

Slit width & height

10µm-10mm (W) x 20mm (H)

Filter size

- 6 position filter wheel : 25mm diameter

- 8 position filter wheel : 22mm diameter

Optical Performance (quoted for typical 2400 g/mm gratings)

Spectral range

200-600nm

Linear dispersion

1.35nm/mm

Wavelength accuracy

± 0.15nm, ± 0.05nm with software correction

Wavelength reproducibility

± 0.05nm

Resolution full/reduced slit height

0.25/0.1nm

Stray light rejection at 2.5 FWHM

10-8

Wavelength acquisition speed

30nm/s

Automation

Computer interface

USB 2.0

Software control

BenWin+/SDK

Monochromator Configurations

Monochromator Configurations

Filters

Neutral density filters

A range of metallic neutral density filters, for installation in the IDR150 filter wheel, are available for the purposes of signal attenuation.

Purge port

Installation of purge ports on IDR150 to enable purging of the space within the monochromator for VUV work.

Diffraction Gratings

Filters

Filters

Slit Type

Order Sorting

Order Sorting

Diffraction Gratings

Filters

Diffraction Gratings

Filters

Monochromator Dimensions

Monochromator Dimensions

Monochromator Dimensions

Monochromator Dimensions

Monochromator Dimensions

Monochromator Dimensions

Monochromator Dimensions

Monochromator Dimensions

Monochromator Dimensiona

Monochromator Dimensions

Monochromator Configuration

Monochromator Configurations

Monochromator Configurations

Monochromator Configurations

Software Control

The DTMs300 may be controlled by PC, facilitated via a USB 2.0 interface by Bentham’s Benwin+ spectroradiometer software, responsible for:

  • Accessing grating filter wheel and slit properties
  • Identifying grating type and position
  • Wavelength selection and calibration
  • Spectral measurements
  • System calibration
  • Configuration files syntax

Alternatively, Bentham offers a comprehensive SDK for user-written programs, available across a wide range of platforms (LabVIEW, Matlab, C++, SPCI protocol, etc.).

Further Options

ND/ BP filters

Neutral density filters, used to attenuate optical signal level or band pass filters, to improve monochromator stray light performance, may be mounted in the filter wheel.

Purge ports

Purge ports fitted to monochromator to allow purging with nitrogen to remove atmospheric absorbants which absorb in the UV (<200nm) and IR (Various absorption bands).

Toroidal mirrors

Toroidal mirrors spherical mirrors replaced with toroidal mirrors for imaging applications.

Turret-mirror

A mirror may be fitted on a free location on the turret for the purposes of relating un-diffracted light to the exit port.

418-INT

418 optical chopper mounted behind the entrance slit.

Interchangeable turrets

For applications where very wide spectral range or regional optimisation is required, an interchangeable turret is available allowing the exchange of groups of three diffraction gratings to cover different spectral regions. In this case, the stepping motor in this case drives a platform to which is attached the grating assembly.

Shutter

Solenoid-based shutter for timed exposure applications.

Spectral range

Required OS filter

<400 m

None

400-700nm

OS400

700-1250nm

OS700

1250-2000nm

OS1250

2000-3600nm

OS2000

3.6-6 µm

OS3600

6-10.5 µm

OS6000

10.5-21 µm

OS10500

> 21µm

Please consult.

Filters

An order sorting filter wheel is located inside the entrance port of the DTMs300 monochromator, fitted with 8 filters selected for the spectral range of use.

When measuring below 400nm, no filters are required as the corresponding wavelength of the subsequent diffraction order is less than 200nm, which is naturally blocked by the atmosphere.

Slits

Slit type

Features

Fixed slits (FSS)

- Manually controlled

- Spring leaf to ensure the correct placement of the slit

Micrometer variable slits (VSS)

- Manually controlled

- Bi-lateral slits

- Variable from 10µm to 10mm

Motorised variable slits (MVSS)

- PC control via USB

- Driven via internal monochromator electronics or external MAC electronics bin

- Comprising stepping motor driven bi-lateral slits

- Variable from 10µm to 10mm

Grating

Line density (g/mm)

Grating type & Blaze wavelength

Maximum wavelength range (nm)

GA-T324R0U25

2400

Plane ruled, 250nm blaze

200-600

GA-T324H0U25

2400

Plane holographic, 250nm blaze

200-600

GA-T324H0U3

2400

Plane ruled, 300nm blaze

200-600

GA-T318H0U25

1800

Plane holographic, 250nm blaze

250-900

GA-T318R0U4

1800

Plane ruled, 400nm blaze

250-900

GA-T318R0U5

1800

Plane ruled, 500nm blaze

250-900

GA-T312H0U25

1200

Plane holographic, 250nm blaze

300-1,200

GA-T312R0U4

1200

Plane ruled, 400nm blaze

300-1,200

GA-T312R0U5

1200

Plane ruled, 500nm blaze

300-1,200

GA-T312R0U75

1200

Plane ruled, 750nm blaze

300-1,200

GA-T312R0U9

1200

Plane ruled, 900nm blaze

300-1,200

GA-T312R1U0

1200

Plane ruled, 1µm blaze

300-1,200

GA-T3083R1U2

830

Plane ruled, 1.2µm blaze

600-1,800

GA-T306R1U0

600

Plane ruled, 1µm blaze

800-2,500

GA-T306R1U25

600

Plane ruled, 1.25µm blaze

800-2,500

GA-T306R1U6

600

Plane ruled, 1.6µm blaze

800-2,500

GA-T306R1U9

600

Plane ruled, 1.9µm blaze

800-2,500

GA-T306R2U16

600

Plane ruled, 2.16µm blaze

800-2,500

GA-T304R1U6

400

Plane ruled, 1.6µm blaze

1,000-3,000

GA-T303R3U0

300

Plane ruled, 3µm blaze

1,500-5,500

GA-T303R4U0

300

Plane ruled, 4µm blaze

1,500-5,500

GA-T3015R4U0-AU

150

Plane ruled, 4µm blaze. Gold coated.

3,000-10,000

GA-T3015R6U0-AU

150

Plane ruled, 6µm blaze. Gold coated.

3,000-10,000

GA-T301R9U0-AU

100

Plane ruled, 9µm blaze. Gold coated.

4,500-16,000

GA-T30075R10U0-AU

75

Plane ruled, 10µm blaze. Gold coated.

6,000-20,000

GA-T30075R12U0-AU

75

Plane ruled, 12µm blaze. Gold coated.

6,000-20,000

GA-T3005R18U0-AU

50

Plane ruled, 18µm blaze. Gold coated.

9,000-30,000

GA-T3005R19U5-AU

50

Plane ruled, 19.5µm blaze. Gold coated.

9,000-30,000

Diffraction Gratings

A range of gratings are available depending on the spectral range of consideration, with up to three diffraction gratings mounted to each turret of the DTMS300.

Options

Diffraction gratings

See Configurations Tab

Order sorting filters

See Configurations Tab

Filter wheel

252-8 (8-position filter wheel, includes shutter)

Electrical/ Mechanical

Overall dimensions

624L x 375W x 255H mm

Optical height

168mm

Weight

Approx. 30 kg

Power supply

Mains input 110/220V 50/60Hz

Automation

Computer interface

USB 2.0

Software control

BenWin+/ SDK

Optical Performance (quoted for 1200 g/mm gratings)

Spectral range

Within range 200nm-50µm

Linear dispersion

1.35nm/mm

Wavelength accuracy

± 0.1nm

Wavelength reproducibility

± 0.025nm

Resolution full/reduced slit height

0.15/ 0.05nm

Stray light rejection at 2.5 FWHM

10-8

Wavelength acquisition speed

2000nm/s

Opto-Mechanical

Mechanical resolution drive

0.000072°/ step

Slit type

Fixed, micrometer or motorised variable

Slit width & height

10µm-10mm (W) x 20mm (H)

Filter size

23mm diameter

Optical Layout

Configuration

Pair symmetrical Czerny Turner monochromators arranged for additive dispersion

Focal length

Total focal length: 600mm

Individual units: 300mm

Grating mount

Triple grating turret

Number of gratings

1-3

Grating size

68 x 84mm

Aperture ratio

f/4.1 (at all grating angles)

Number of entrance/ exit ports

1/2 or 2/1 on both monochromators

Software Control

The TMS300 may be controlled by PC, facilitated via a USB 2.0 interface by Bentham’s Benwin+ spectroradiometer software, responsible for:

  • Accessing grating filter wheel and slit properties
  • Identifying grating type and position
  • Wavelength selection and calibration
  • Spectral measurements
  • System calibration
  • Configuration files syntax

Alternatively, Bentham offers a comprehensive SDK for user-written programs, available across a wide range of platforms (LabVIEW, Matlab, C++, SPCI protocol, etc.).

Further Options

ND/ BP filters

Neutral density filters, used to attenuate optical signal level or band pass filters, to improve monochromator stray light performance, may be mounted in the filter wheel.

Purge ports

Purge ports fitted to monochromator to allow purging with nitrogen to remove atmospheric absorbants which absorb in the UV (<200nm) and IR (Various absorption bands).

Toroidal mirrors

Toroidal mirrors spherical mirrors replaced with toroidal mirrors for imaging applications.

Turret-mirror

A mirror may be fitted on a free location on the turret for the purposes of relating un-diffracted light to the exit port.

418-INT

418 optical chopper mounted behind the entrance slit.

Interchangeable turrets

For applications where very wide spectral range or regional optimisation is required, an interchangeable turret is available allowing the exchange of groups of three diffraction gratings to cover different spectral regions. In this case, the stepping motor in this case drives a platform to which is attached the grating assembly.

Shutter

Solenoid-based shutter for timed exposure applications.

Spectral range

Required OS filter

<400 m

None

400-700nm

OS400

700-1250nm

OS700

1250-2000nm

OS1250

2000-3600nm

OS2000

3.6-6 µm

OS3600

6-10.5 µm

OS6000

10.5-21 µm

OS10500

> 21µm

Please consult.

Filters

An order sorting filter wheel is located inside the entrance port of the monochromator, fitted with 6 filters selected for the spectral range of use.

When measuring below 400nm, no filters are required as the corresponding wavelength of the subsequent diffraction order is less than 200nm, which is naturally blocked by the atmosphere.

Slits

Slit type

Features

Fixed slits (FSS)

- Manually controlled

- Spring leaf to ensure the correct placement of the slit

Micrometer variable slits (VSS)

- Manually controlled

- Bi-lateral slits

- Variable from 10µm to 10mm

Motorised variable slits (MVSS)

- PC control via USB

- Driven via internal monochromator electronics or external MAC electronics bin

- Comprising stepping motor driven bi-lateral slits

- Variable from 10µm to 10mm

Grating

Line density (g/mm)

Grating type & Blaze wavelength

Maximum wavelength range (nm)

GA-T324R0U25

2400

Plane ruled, 250nm blaze

200-600

GA-T324H0U25

2400

Plane holographic, 250nm blaze

200-600

GA-T324H0U3

2400

Plane ruled, 300nm blaze

200-600

GA-T318H0U25

1800

Plane holographic, 250nm blaze

250-900

GA-T318R0U4

1800

Plane ruled, 400nm blaze

250-900

GA-T318R0U5

1800

Plane ruled, 500nm blaze

250-900

GA-T312H0U25

1200

Plane holographic, 250nm blaze

300-1,200

GA-T312R0U4

1200

Plane ruled, 400nm blaze

300-1,200

GA-T312R0U5

1200

Plane ruled, 500nm blaze

300-1,200

GA-T312R0U75

1200

Plane ruled, 750nm blaze

300-1,200

GA-T312R0U9

1200

Plane ruled, 900nm blaze

300-1,200

GA-T312R1U0

1200

Plane ruled, 1µm blaze

300-1,200

GA-T3083R1U2

830

Plane ruled, 1.2µm blaze

600-1,800

GA-T306R1U0

600

Plane ruled, 1µm blaze

800-2,500

GA-T306R1U25

600

Plane ruled, 1.25µm blaze

800-2,500

GA-T306R1U6

600

Plane ruled, 1.6µm blaze

800-2,500

GA-T306R1U9

600

Plane ruled, 1.9µm blaze

800-2,500

GA-T306R2U16

600

Plane ruled, 2.16µm blaze

800-2,500

GA-T304R1U6

400

Plane ruled, 1.6µm blaze

1,000-3,000

GA-T303R3U0

300

Plane ruled, 3µm blaze

1,500-5,500

GA-T303R4U0

300

Plane ruled, 4µm blaze

1,500-5,500

GA-T3015R4U0-AU

150

Plane ruled, 4µm blaze. Gold coated.

3,000-10,000

GA-T3015R6U0-AU

150

Plane ruled, 6µm blaze. Gold coated.

3,000-10,000

GA-T301R9U0-AU

100

Plane ruled, 9µm blaze. Gold coated.

4,500-16,000

GA-T30075R10U0-AU

75

Plane ruled, 10µm blaze. Gold coated.

6,000-20,000

GA-T30075R12U0-AU

75

Plane ruled, 12µm blaze. Gold coated.

6,000-20,000

GA-T3005R18U0-AU

50

Plane ruled, 18µm blaze. Gold coated.

9,000-30,000

GA-T3005R19U5-AU

50

Plane ruled, 19.5µm blaze. Gold coated.

9,000-30,000

Diffraction Gratings

A range of gratings are available depending on the spectral range of consideration, with up to three diffraction gratings mounted to the turret of the TMS300.

Options

Diffraction gratings

See Configurations Tab

Order sorting filters

See Configurations Tab

Filter wheel

252-6 (6-position filter wheel, includes shutter)

Electrical/ Mechanical

Overall dimensions

328L x 375W x 263H mm

Optical height

178mm

Weight

Approx. 15kg

Power supply

Mains input 110/220V 50/60Hz

Automation

Computer interface

USB 2.0

Software control

BenWin+/SDK

Optical Performance (quoted for 1200 g/mm gratings)

Spectral range

Within range 200nm-50µm

Linear dispersion

2.7nm/mm

Wavelength accuracy

± 0.2nm

Wavelength reproducibility

± 0.05nm

Resolution full/reduced slit height

0.3/0.1nm

Stray light rejection at 2.5 FWHM

10-5

Wavelength acquisition speed

1000nm/s

Opto-Mechanical

Mechanical resolution drive

0.00072°/ step

Slit type

Internal motorised variable

Slit width & height

10µm-10mm (W) x 20 (H)

Filter size

6-position filter wheel

Filter diameter

25mm (see separate Order Sorting Filter datasheet for full range)

Optical Layout

Configuration

Symmetrical Czerny Turner

Focal length

300mm

Grating mount

Triple grating turret

Number of gratings

1-3

Grating size

68 x 84mm

Aperture ratio

f/4.1 (at all grating angles)

Number of entrance/ exit ports

1/2 or 2/1

Software Control

The DTMc300 may be controlled by PC, facilitated via a USB 2.0 interface by Bentham’s Benwin+ spectroradiometer software, responsible for:

  • Accessing grating filter wheel and slit properties
  • Identifying grating type and position
  • Wavelength selection and calibration
  • Spectral measurements
  • System calibration
  • Configuration files syntax

Alternatively, Bentham offers a comprehensive SDK for user-written programs, available across a wide range of platforms (LabVIEW, Matlab, C++, SCPI protocol, etc.).

Further Options

ND/ BP filters

Neutral density filters, used to attenuate optical signal level or band pass filters, to improve monochromator stray light performance, may be mounted in the filter wheel.

Purge ports

Purge ports fitted to monochromator to allow purging with nitrogen to remove atmospheric absorbants which absorb in the UV (<200nm) and IR (Various absorption bands).

Toroidal mirrors

Toroidal mirrors spherical mirrors replaced with toroidal mirrors for imaging applications.

Turret-mirror

A mirror may be fitted on a free location on the turret for the purposes of relating un-diffracted light to the exit port.

418-INT

418 optical chopper mounted behind the entrance slit.

Interchangeable turrets

For applications where very wide spectral range or regional optimisation is required, an interchangeable turret is available allowing the exchange of groups of three diffraction gratings to cover different spectral regions. In this case, the stepping motor in this case drives a platform to which is attached the grating assembly.

Shutter

Solenoid-based shutter for timed exposure applications.

Spectral range

Required OS filter

<400 nm

None

400-700 nm

OS400

700-1250 nm

OS700

1250-2000 nm

OS1250

2000-3600 nm

OS2000

3.6-6 µm

OS3600

6-10.5 µm

OS6000

10.5-21 µm

OS10500

> 21 µm

Please consult.

Filters

An order sorting filter wheel is located inside the entrance port of the monochromator, fitted with 6 or 8 filters selected for the spectral range of use.

When measuring below 400nm, no filters are required as the corresponding wavelength of the subsequent diffraction order is less than 200nm, which is naturally blocked by the atmosphere.

Slits

Slit type

Features

Fixed slits (FSS)

- Manually controlled

- Spring leaf to ensure the correct placement of the slit

Micrometer variable slits (VSS)

- Manually controlled

- Bi-lateral slits

- Variable from 10µm to 10mm

Motorised variable slits (MVSS)

- PC control via USB

- Driven via internal monochromator electronics or external MAC electronics bin

- Comprising stepping motor driven bi-lateral slits

- Variable from 10µm to 10mm

Grating

Line density (g/mm)

Grating type & Blaze wavelength

Maximum wavelength range (nm)

GA-T324R0U25

2400

Plane ruled, 250nm blaze

200-600

GA-T324H0U25

2400

Plane holographic, 250nm blaze

200-600

GA-T324H0U3

2400

Plane ruled, 300nm blaze

200-600

GA-T318H0U25

1800

Plane holographic, 250nm blaze

250-900

GA-T318R0U4

1800

Plane ruled, 400nm blaze

250-900

GA-T318R0U5

1800

Plane ruled, 500nm blaze

250-900

GA-T312H0U25

1200

Plane holographic, 250nm blaze

300-1,200

GA-T312R0U4

1200

Plane ruled, 400nm blaze

300-1,200

GA-T312R0U5

1200

Plane ruled, 500nm blaze

300-1,200

GA-T312R0U75

1200

Plane ruled, 750nm blaze

300-1,200

GA-T312R0U9

1200

Plane ruled, 900nm blaze

300-1,200

GA-T312R1U0

1200

Plane ruled, 1µm blaze

300-1,200

GA-T3083R1U2

830

Plane ruled, 1.2µm blaze

600-1,800

GA-T306R1U0

600

Plane ruled, 1µm blaze

800-2,500

GA-T306R1U25

600

Plane ruled, 1.25µm blaze

800-2,500

GA-T306R1U6

600

Plane ruled, 1.6µm blaze

800-2,500

GA-T306R1U9

600

Plane ruled, 1.9µm blaze

800-2,500

GA-T306R2U16

600

Plane ruled, 2.16µm blaze

800-2,500

GA-T304R1U6

400

Plane ruled, 1.6µm blaze

1,000-3,000

GA-T303R3U0

300

Plane ruled, 3µm blaze

1,500-5,500

GA-T303R4U0

300

Plane ruled, 4µm blaze

1,500-5,500

GA-T3015R4U0-AU

150

Plane ruled, 4µm blaze. Gold coated.

3,000-10,000

GA-T3015R6U0-AU

150

Plane ruled, 6µm blaze. Gold coated.

3,000-10,000

GA-T301R9U0-AU

100

Plane ruled, 9µm blaze. Gold coated.

4,500-16,000

GA-T30075R10U0-AU

75

Plane ruled, 10µm blaze. Gold coated.

6,000-20,000

GA-T30075R12U0-AU

75

Plane ruled, 12µm blaze. Gold coated.

6,000-20,000

GA-T3005R18U0-AU

50

Plane ruled, 18µm blaze. Gold coated.

9,000-30,000

GA-T3005R19U5-AU

50

Plane ruled, 19.5µm blaze. Gold coated.

9,000-30,000

Diffraction Gratings

A range of gratings are available depending on the spectral range of consideration, with up to three diffraction gratings mounted to each turret of the DTMc300.

Options

Diffraction gratings

See Configurations Tab

Order sorting filters

See Configurations Tab

Filter wheel

252-6 or 252-8 (6/8-position filter wheel, includes shutter)

Electrical/ Mechanical

Overall dimensions

634L x 360W x 211H

Optical height

115mm

Weight

28 kg

Power supply

External PSU supplied (DC 24V 5A)

Automation

Computer interface

USB 2.0

Software control

BenWin+/SDK

Optical Performance (quoted for 1200 g/mm gratings)

Spectral range

Within range 200nm-50µm

Linear dispersion

1.35nm/mm (additive)

Wavelength accuracy

± 0.1nm

Wavelength reproducibility

± 0.025nm

Resolution full/reduced slit height

0.15/0.05nm

Stray light rejection at 2.5 FWHM

10-8

Wavelength acquisition speed

2000nm/s

Opto-Mechanical

Mechanical resolution drive

0.000072°/ step

Slit type

Fixed, micrometer or motorised variable

Slit width & height

10µm-10mm (W) x 20mm (H)

Filter size

23/25mm diameter

Optical Layout

Configuration

Pair symmetrical Czerny Turner monochromators arranged for either additive or subtractive dispersion

Focal length

Total focal length: 600mm (additive)

Individual Units: 300mm

Grating mount

Triple grating turret

Number of gratings

1-3

Grating size

68 x 84mm

Aperture ratio

f/4.1 (at all grating angles)

Number of entrance/ exit ports

1 or 2 in both monochromators

Software Control

The TMC300 may be controlled by PC, facilitated via a USB 2.0 interface by Bentham’s Benwin+ spectroradiometer software, responsible for:

  • Accessing grating filter wheel and slit properties
  • Identifying grating type and position
  • Wavelength selection and calibration
  • Spectral measurements
  • System calibration
  • Configuration files syntax

Alternatively, Bentham offers a comprehensive SDK for user-written programs, available across a wide range of platforms (LabVIEW, Matlab, C++, SPCI protocol, etc.).

Further Options

ND/ BP filters

Neutral density filters, used to attenuate optical signal level or band pass filters, to improve monochromator stray light performance, may be mounted in the filter wheel.

Purge ports

Purge ports fitted to monochromator to allow purging with nitrogen to remove atmospheric absorbants which absorb in the UV (<200nm) and IR (Various absorption bands).

Toroidal mirrors

Toroidal mirrors spherical mirrors replaced with toroidal mirrors for imaging applications.

Turret-mirror

A mirror may be fitted on a free location on the turret for the purposes of relating un-diffracted light to the exit port.

418-INT

418 optical chopper mounted behind the entrance slit.

Interchangeable turrets

For applications where very wide spectral range or regional optimisation is required, an interchangeable turret is available allowing the exchange of groups of three diffraction gratings to cover different spectral regions. In this case, the stepping motor in this case drives a platform to which is attached the grating assembly.

Shutter

Solenoid-based shutter for timed exposure applications.

Spectral range

Required OS filter

<400 m

None

400-700nm

OS400

700-1250nm

OS700

1250-2000nm

OS1250

2000-3600nm

OS2000

3.6-6 µm

OS3600

6-10.5 µm

OS6000

10.5-21 µm

OS10500

> 21µm

Please consult.

An order sorting filter wheel is located inside the entrance port of the monochromator, fitted with 6 filters selected for the spectral range of use.

When measuring below 400nm, no filters are required as the corresponding wavelength of the subsequent diffraction order is less than 200nm, which is naturally blocked by the atmosphere.

Slits

Slit type

Features

Fixed slits (FSS)

- Manually controlled

- Spring leaf to ensure the correct placement of the slit

Micrometer variable slits (VSS)

- Manually controlled

- Bi-lateral slits

- Variable from 10µm to 10mm

Motorised variable slits (MVSS)

- PC control via USB

- Driven via internal monochromator electronics or external MAC electronics bin

- Comprising stepping motor driven bi-lateral slits

- Variable from 10µm to 10mm

Grating

Line density (g/mm)

Grating type & Blaze wavelength

Maximum wavelength range (nm)

GA-T324R0U25

2400

Plane ruled, 250nm blaze

200-600

GA-T324H0U25

2400

Plane holographic, 250nm blaze

200-600

GA-T324H0U3

2400

Plane ruled, 300nm blaze

200-600

GA-T318H0U25

1800

Plane holographic, 250nm blaze

250-900

GA-T318R0U4

1800

Plane ruled, 400nm blaze

250-900

GA-T318R0U5

1800

Plane ruled, 500nm blaze

250-900

GA-T312H0U25

1200

Plane holographic, 250nm blaze

300-1,200

GA-T312R0U4

1200

Plane ruled, 400nm blaze

300-1,200

GA-T312R0U5

1200

Plane ruled, 500nm blaze

300-1,200

GA-T312R0U75

1200

Plane ruled, 750nm blaze

300-1,200

GA-T312R0U9

1200

Plane ruled, 900nm blaze

300-1,200

GA-T312R1U0

1200

Plane ruled, 1µm blaze

300-1,200

GA-T3083R1U2

830

Plane ruled, 1.2µm blaze

600-1,800

GA-T306R1U0

600

Plane ruled, 1µm blaze

800-2,500

GA-T306R1U25

600

Plane ruled, 1.25µm blaze

800-2,500

GA-T306R1U6

600

Plane ruled, 1.6µm blaze

800-2,500

GA-T306R1U9

600

Plane ruled, 1.9µm blaze

800-2,500

GA-T306R2U16

600

Plane ruled, 2.16µm blaze

800-2,500

GA-T304R1U6

400

Plane ruled, 1.6µm blaze

1,000-3,000

GA-T303R3U0

300

Plane ruled, 3µm blaze

1,500-5,500

GA-T303R4U0

300

Plane ruled, 4µm blaze

1,500-5,500

GA-T3015R4U0-AU

150

Plane ruled, 4µm blaze. Gold coated.

3,000-10,000

GA-T3015R6U0-AU

150

Plane ruled, 6µm blaze. Gold coated.

3,000-10,000

GA-T301R9U0-AU

100

Plane ruled, 9µm blaze. Gold coated.

4,500-16,000

GA-T30075R10U0-AU

75

Plane ruled, 10µm blaze. Gold coated.

6,000-20,000

GA-T30075R12U0-AU

75

Plane ruled, 12µm blaze. Gold coated.

6,000-22,000

GA-T3005R18U0-AU

50

Plane ruled, 18µm blaze. Gold coated.

9,000-30,000

GA-T3005R19U5-AU

50

Plane ruled, 19.5µm blaze. Gold coated.

9,000-30,000

Diffraction Gratings

A range of gratings are available depending on the spectral range of consideration. A range of gratings are available depending on the spectral range of consideration, with up to three diffraction gratings mounted to the turret of the TMc300.

Electrical/ Mechanical

Overall dimensions

316L x 354W x 209H mm

Optical height

115mm

Weight

14 kg

Power supply

Mains input 110/220V 50/60Hz

Automation

Computer interface

USB 2.0

Software control

BenWin+/SDK

Optical Performance (quoted for 1200 g/mm gratings)

Spectral range

Within range 200nm-50µm

Linear dispersion

2.7nm/mm

Wavelength accuracy

± 0.2nm

Wavelength reproducibility

± 0.05nm

Resolution full/reduced slit height

0.3/0.1nm

Stray light rejection at 10x FWHM

5·10-5

Wavelength acquisition speed

1000nm/s

Opto-Mechanical

Mechanical resolution drive

0.000072°/ step

Slit type

Fixed, micrometer or motorised variable

Slit width & height

10µm-8mm (W) x 20mm (H)

Filter size

25/ 22mm diameter

Optical Layout

Configuration

Symmetrical Czerny Turner

Focal length

300mm

Grating mount

Triple grating turret

Number of gratings

1-3

Grating size

68 x 84mm

Aperture ratio

f/4.1 (at all grating angles)

Number of entrance/ exit ports

1/2 or 2/1

Software Control

The DMc150 may be controlled over the USB 2.0 interface using our Windows application Benwin+ or by user written code based on our SDK on a wide range of platforms (Labview, Matlab, C++ etc. Using configuration files, both applications allow:

  • Accessing grating, filter wheel and slit properties
  • Wavelength selection
  • Spectral measurements

Benwin+ includes higher functionality including:-

  • Easy system calibration
  • Obtain spectrally integrated (and weighted) quantities
  • Instantly obtain colorimetric data
  • Perform transmission, absorption and reflection measurements
  • Perform simple arithmetic functions
  • Utilities for control of translation stages, goniometers, RSB, data acquisition from other instruments etc.

Further Options

Slit type

Features

Fixed slits (FSS)

- Manually controlled

- Spring leaf to ensure the correct placement of the slit

Micrometer variable slits (VSS)

- Manually controlled

- Bi-lateral slits

- Variable from 10µm to 10mm

Motorised variable slits (MVSS)

- PC control via USB

- Driven via internal monochromator electronics or external MAC electronics bin

- Comprising stepping motor driven bi-lateral slits

- Variable from 10µm to 10mm

Slit Type

The dimension of the largest of the entrance/ exit slits defines the bandwidth of the monochromator. Fixed, micrometer variable and motorised variable slits are offered, with a slit height of 20mm. For tuneable light source applications a range of exit slit apertures are available. Please enquire for further information.

Slit Configuration

The DMc150 can be configured in the compact, in-line or dual layouts. In the latter case a solenoid-driven programmable swing away mirrors (SAM), controlled by the internal drive electronics, is fitted for port selection.

Spectral range

Required OS filter

<400 nm

Under standard conditions- none required

Under purged operation

OS310

400-700nm

OS400

700-1250nm

OS700

1250-2000nm

OS1250

2000-3600nm

OS2000

A filter wheel is located behind the entrance slit of the DMc150 to accommodate a shutter and long pass filters as required for the spectral range of operation. A six position filter wheel, for 25mm diameter filters is fitted as standard. An eight position filter wheel, for 22mm diameter filters is required where more positions are required.

Grating

Line density (g/mm)

Grating type & Blaze wavelength

Maximum wavelength range (nm)

GA-G1524H0U25

2400

Plane holographic, 250nm blaze

200-600

GA-G1518H0U25

1800

Plane holographic, 250nm blaze

200-800

GA-G1518R0U5

1800

Plane ruled, 500nm blaze

200-800

GA-G1512R0U4

1200

Plane ruled, 400nm blaze

300-1,100

GA-G1512R0U5

1200

Plane ruled, 500nm blaze

300-1,100

GA-G1512R0U75

1200

Plane ruled, 750nm blaze

450-1,100

GA-G15083R1U2

830

Plane ruled, 1.2µm blaze

650-1,700

GA-G1506R1U25

600

Plane ruled, 1.25µm blaze

800-2,400

GA-G1506R1U6

600

Plane ruled, 1.6µm blaze

800-2,400

Diffraction Gratings

A range of gratings are available depending on the spectral range of consideration. Diffraction gratings are supplied in pairs, on kinematic mounts to permit easy installation in the DMc150 without compromising the wavelength calibration.

Automation

Computer interface

USB 2.0

Software control

BenWin+/SDK

Optical Performance (quoted for typical 2400 g/mm gratings)

Spectral range

200-600nm

Linear dispersion

1.35nm/mm

Wavelength accuracy

± 0.15nm, ± 0.05nm with software correction

Wavelength reproducibility

± 0.05nm

Resolution full/reduced slit height

0.25/0.1nm

Stray light rejection at 2.5 FWHM

10-8

Wavelength acquisition speed

30nm/s

Opto-Mechanical

Wavelength scanning

By integrated stepping motor and micro-stepping drive electronics

Slit type

Fixed, micrometer or motorised variable

Slit width & height

10µm-10mm (W) x 20mm (H)

Filter size

- 6 position filter wheel : 25mm diameter

- 8 position filter wheel : 22mm diameter

Optical Layout

Configuration

Pair symmetrical Czerny Turner monochromators, additive dispersion

Focal length

Total focal length: 300mm

Individual Units: 150mm

Grating mount

Kinematic

Number of gratings

1 pair

Grating size

33x33mm

Aperture ratio

f/4

Number of entrance/exit ports

1 entrance, 1-2 exits

Spectral range

Within range 200nm-2400nm

Software Control

The TMC150 may be controlled by PC, facilitated via a USB 2.0 interface by Bentham’s Benwin+ spectroradiometer software, responsible for:

  • Accessing grating filter wheel and slit properties
  • Identifying grating type and position
  • Wavelength selection and calibration
  • Spectral measurements
  • System calibration
  • Configuration files syntax

Alternatively, Bentham offers a comprehensive SDK for user-written programs, available across a wide range of platforms (LabVIEW, Matlab, C++, SPCI protocol, etc.).

Further Options

ND/ BP filters

Neutral density filters, used to attenuate optical signal level or band pass filters, to improve monochromator stray light performance, may be mounted in the filter wheel.

Purge ports

Purge ports fitted to monochromator to allow purging with nitrogen to remove atmospheric absorbants which absorb in the UV (<200nm) and IR (Various absorption bands).

Toroidal mirrors

Toroidal mirrors spherical mirrors replaced with toroidal mirrors for imaging applications.

Turret-mirror

A mirror may be fitted on a free location on the turret for the purposes of relating un-diffracted light to the exit port.

418-INT

418 optical chopper mounted behind the entrance slit.

Interchangeable turrets

For applications where very wide spectral range or regional optimisation is required, an interchangeable turret is available allowing the exchange of groups of three diffraction gratings to cover different spectral regions. In this case, the stepping motor in this case drives a platform to which is attached the grating assembly.

Shutter

Solenoid-based shutter for timed exposure applications.

Spectral range

Required OS filter

<400 m

None

400-700nm

OS400

700-1250nm

OS700

1250-2000nm

OS1250

2000-3600nm

OS2000

3.6-6 µm

OS3600

6-10.5 µm

OS6000

10.5-21 µm

OS10500

> 21µm

Please consult.

An order sorting filter wheel is located inside the entrance port of the monochromator, fitted with 6 filters selected for the spectral range of use.

When measuring below 400nm, no filters are required as the corresponding wavelength of the subsequent diffraction order is less than 200nm, which is naturally blocked by the atmosphere.

Slits

Slit type

Features

Fixed slits (FSS)

- Manually controlled

- Spring leaf to ensure the correct placement of the slit

Micrometer variable slits (VSS)

- Manually controlled

- Bi-lateral slits

- Variable from 10µm to 10mm

Motorised variable slits (MVSS)

- PC control via USB

- Driven via internal monochromator electronics or external MAC electronics bin

- Comprising stepping motor driven bi-lateral slits

- Variable from 10µm to 10mm

Diffraction Gratings

A range of gratings are available depending on the spectral range of consideration, with up to three diffraction gratings mounted to the turret of the TMc150.

Grating

Line density (g/mm)

Grating type & Blaze wavelength

Maximum wavelength range (nm)

GA-G1524R0U25

2400

Plane ruled, 250nm blaze

200-600

GA-G1524H0U25

2400

Plane holographic, 250nm blaze

200-600

GA-G1524H0U3

2400

Plane ruled, 300nm blaze

200-600

GA-G1518H0U25

1800

Plane holographic, 250nm blaze

250-900

GA-G1518R0U4

1800

Plane ruled, 400nm blaze

250-900

GA-G1518R0U5

1800

Plane ruled, 500nm blaze

250-900

GA-G1512H0U25

1200

Plane holographic, 250nm blaze

300-1,200

GA-G1512R0U4

1200

Plane ruled, 400nm blaze

300-1,200

GA-G1512R0U5

1200

Plane ruled, 500nm blaze

300-1,200

GA-G1512R0U75

1200

Plane ruled, 750nm blaze

300-1,200

GA-G1512R0U9

1200

Plane ruled, 900nm blaze

300-1,200

GA-G1512R1U0

1200

Plane ruled, 1µm blaze

300-1,200

GA-G15083R1U2

830

Plane ruled, 1µm blaze

600-1,800

GA-G1506R1U0

600

Plane ruled, 1µm blaze

800-2,500

GA-G1506R1U25

600

Plane ruled, 1.25µm blaze

800-2,500

GA-G1506R1U6

600

Plane ruled, 1.6µm blaze

800-2,500

GA-G1506R1U9

600

Plane ruled, 1.9µm blaze

800-2,500

GA-G1506R2U16

600

Plane ruled, 2.16µm blaze

800-2,500

GA-G1504R1U6

400

Plane ruled, 1.6µm blaze

1,000-3,000

GA-G1503R3U0

300

Plane ruled, 3µm blaze

1,500-5,500

GA-G1503R4U0

300

Plane ruled, 4µm blaze

1,500-5,500

GA-G15015R4U0-AU

150

Plane ruled, 4µm blaze. Gold coated.

3,000-10,000

GA-G15015R6U0-AU

150

Plane ruled, 6µm blaze. Gold coated.

3,000-10,000

GA-G1501R9U0-AU

100

Plane ruled, 9µm blaze. Gold coated.

4,500-16,000

GA-G150075R10U0-AU

75

Plane ruled, 10µm blaze. Gold coated.

6,000-22,000

GA-G150075R12U0-AU

75

Plane ruled, 12µm blaze. Gold coated.

6,000-22,000

GA-G15005R18U0-AU

50

Plane ruled, 18µm blaze. Gold coated.

9,000-30,000

GA-G15005R19U5-AU

50

Plane ruled, 19.5µm blaze. Gold coated.

9,000-30,000

Options

Diffraction gratings

See Configurations Tab

Order sorting filters

See Configurations Tab

Filter wheel

6-position order-sorting filter wheel (filter diameter 23mm)

Electrical/ Mechanical

Overall dimensions

137L x 232W x 168H mm

Optical height

110mm

Power supply

External DC PSU

Automation

Computer interface

USB 2.0

Software control

BenWin+/SDK

Optical Performance (quoted for 1200 g/mm gratings)

Spectral range

Within range 200nm-50µm

Linear dispersion

5.4 nm/mm

Wavelength accuracy

± 0.3nm

Wavelength reproducibility

± 0.01nm

Resolution full/reduced slit height

0.3/ 0.2nm

Stray light rejection at 2.5 FWHM

10-5

Opto-Mechanical

Mechanical resolution drive

0.000072°/ step

Slit type

Fixed, micrometer or motorised variable

Slit width & height

10µm-10mm (W) x 20mm (H)

Filter size

25mm diameter

Optical Layout

Configuration

Symmetrical Czerny Turner

Focal length

150mm

Grating mount

Dual grating turret

Number of gratings

1-2

Grating size

30 x 30mm

Aperture ratio

f/4.2

Number of entrance/ exit ports

1 entrance, 1 exit

Diffraction Gratings

A range of gratings are available depending on the spectral range of consideration. Diffraction gratings are supplied in pairs, on kinematic mounts to permit easy installation in the DMc150 without compromising the wavelength calibration.

Grating

Line density (g/mm)

Grating type & Blaze wavelength

Maximum wavelength range (nm)

GA-G1524H0U25

2400

Plane holographic, 250nm blaze

200-600

GA-G1518H0U25

1800

Plane holographic, 250nm blaze

200-800

GA-G1518R0U5

1800

Plane ruled, 500nm blaze

200-800

GA-G1512R0U4

1200

Plane ruled, 400nm blaze

300-1,100

GA-G1512R0U5

1200

Plane ruled, 500nm blaze

300-1,100

GA-G1512R0U75

1200

Plane ruled, 750nm blaze

450-1,100

GA-G15083R1U2

830

Plane ruled, 1.2µm blaze

650-1,700

GA-G1506R1U25

600

Plane ruled, 1.25µm blaze

800-2,400

GA-G1506R1U6

600

Plane ruled, 1.6µm blaze

800-2,400

Order Sorting

A filter wheel is located behind the entrance slit of the DMc150 to accommodate a shutter and long pass filters as required for the spectral range of operation. A six position filter wheel, for 25mm diameter filters is fitted as standard. An eight position filter wheel, for 22mm diameter filters is required where more positions are required.

Spectral range

Required OS filter

<400 nm

Under standard conditions- none required

Under purged operation

OS310

400-700nm

OS400

700-1250nm

OS700

1250-2000nm

OS1250

2000-3600nm

OS2000

Slit Configuration

The DMc150 can be configured in the compact, in-line or dual layouts. In the latter case a solenoid-driven programmable swing away mirrors (SAM), controlled by the internal drive electronics, is fitted for port selection.

Slit Type

The dimension of the largest of the entrance/ exit slits defines the bandwidth of the monochromator. Fixed, micrometer variable and motorised variable slits are offered, with a slit height of 20mm. For tuneable light source applications a range of exit slit apertures are available. Please enquire for further information.

Slit type

Features

Fixed slits (FSS)

- Manually controlled

- Spring leaf to ensure the correct placement of the slit

Micrometer variable slits (VSS)

- Manually controlled

- Bi-lateral slits

- Variable from 10µm to 10mm

Motorised variable slits (MVSS)

- PC control via USB

- Driven via internal monochromator electronics or external MAC electronics bin

- Comprising stepping motor driven bi-lateral slits

- Variable from 10µm to 10mm

Further Options

Neutral density filters

A range of metallic neutral density filters, for installation in the IDR150 filter wheel, are available for the purposes of signal attenuation.

Purge port

Installation of purge ports on IDR150 to enable purging of the space within the monochromator for VUV work.

Monochromator Dimensions

Software Control

The DMc150 may be controlled over the USB 2.0 interface using our Windows application Benwin+ or by user written code based on our SDK on a wide range of platforms (Labview, Matlab, C++ etc. Using configuration files, both applications allow:

  • Accessing grating, filter wheel and slit properties
  • Wavelength selection
  • Spectral measurements

Benwin+ includes higher functionality including:-

  • Easy system calibration
  • Obtain spectrally integrated (and weighted) quantities
  • Instantly obtain colorimetric data
  • Perform transmission, absorption and reflection measurements
  • Perform simple arithmetic functions
  • Utilities for control of translation stages, goniometers, RSB, data acquisition from other instruments etc.

Share this:

The Bentham Standard

We’re with you from the first call to the final result

Call us on +44 118 975 1355 or email us