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  • DH_IGA photodiode 800nm-1700nm
  • DH_IGA detector
  • DH_IGA detector with quick change adaptor
  • DH_IGA detector with quick change interface

Housing a 3mm diameter active area InGaAs photodiode (800-1700nm), the DH_IGA is operated in the photovoltaic mode. The photocurrent generated by this detector is best measured using the 487 picoammeter or the 477 pre-amplifier followed by the 496 lock-in amplifier.

The mounting flange supplied with the DH_IGA is compatible with the entire range of Bentham monochromators and accessories. A quick-change variant is also available. Other options include thermoelectric cooling for ultimate stability (yet reduced spectral range), and a lensed solution to maximise coupling from monochromator.

Core benefits

Features

  • Housed InGaAs photodiode
  • Operated in either the DC or AC regimes
  • Compatible with Bentham's entire range of monochromators and accessories
  • Suitable for free standing applications
  • Recommended for use with 400 series detection electronics
  • Range of options

Electro-Optical

Material Indium gallium arsenide
Active area 3mm diameter
Spectral response range 800-1700nm (800-1650nm for DH_IGA_3_TE)
Operating mode Photovoltaic
Dark current (typ.) <1pA
Shunt resistance (typ.) 5MΩ
Peak wavelength (typ.) 1.57µm
Peak responsivity (typ.) 1.07 A.W-1
NEP 7 x 10-14 W.Hz-1/2
Max. photocurrent 2mA
Max. operating temperature -20 to +60°C

Mechanical

Connector BNC
Compatibility 4 x M3 clearance holes (Bentham slit pattern)
Dimensions

Options

DH_IGA_3 Indium gallium arsenide photodiode
DH_IGA_3_LENS Lensed indium gallium arsenide photodiode
DH_IGA_3_QC Indium gallium arsenide photodiode, quick change interface
DH_IGA_3_TE Thermoelectrically cooled indium gallium arsenide photodiode. Requires CPS1(M).

Ordering Information

DH_IGA_3 Indium gallium arsenide photodiode
DH_IGA_3_LENS Lensed indium gallium arsenide photodiode
DH_IGA_3_QC Indium gallium arsenide photodiode, quick change interface
DH_IGA_3_TE Thermoelectrically cooled indium gallium arsenide photodiode. Requires CPS1(M).

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