DH_IGA-EX_TE Photodiode (900-1900/2550nm)

  • DH_IGA-EX_TE Extended Indium Gallium Arsenide Photodiode
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+44 (0)118 975 1355

Housing a 3mm diameter active area extended InGaAs photodiode (900-1900/2500nm), the DH_IGA is operated in the photovoltaic mode. Using an optically chopped input, the signal generated by this detector is best measured in using the 477 trans-impedance pre-amplifier followed by the 496 DSP lock-in amplifier.

The mounting flange supplied with the DH_IGA-EX_TE is compatible with the entire range of Bentham monochromators and accessories. A quick-change variant is also available. Options include extended variants and a lens solution to maximise coupling from monochromator.

Core benefits

Features

  • Housed extended InGaAs photodiode
  • 3mm diameter active area
  • Operated in AC mode
  • Compatible with Bentham's entire range of monochromators and accessories
  • Suitable for free standing applications
  • Recommended for use with 400 series detection electronics

Electro-optical

MaterialIndium Gallium Arsenide
Active area3mm diameter
Spectral response range800-1700nm (800-1650nm for DH_IGA_3_TE)
Operating modePhotovoltaic
Dark current (typ.)<1pA
Shunt resistance (typ.)5MΩ
Peak wavelength (typ.)1.57µm
Peak responsivity (typ.)1.07 A.W-1
NEP7 x 10-14 W.Hz-1/2
Max. photocurrent2mA
Max. operating temperature-20 to +60°C

Mechanical

ConnectorBNC
Compatibility4 x M3 clearance holes (Bentham slit pattern)
Dimensions 

Options

DH_IGA-EX1.9_TECooled, 1.9µm extended indium gallium arsenide photodiode
DH_IGA-EX1.9_TE_LENSCooled, 1.9µm extended indium gallium arsenide photodiode
DH_IGA-EX2.55_TECooled, 2.55µm extended indium gallium arsenide photodiode
DH_IGA-EX2.55_TE_LENSCooled, 2.55µm extended indium gallium arsenide photodiode
Typical DH_IGA-EX_TE photodiode Responsivity
DH_IGA-EX_TE Typical Relative Spectral Responsivity

Ordering Information

DH_IGA-EX1.9_TECooled, 1.9µm extended indium gallium arsenide photodiode
DH_IGA-EX1.9_TE_LENSCooled, 1.9µm extended indium gallium arsenide photodiode
DH_IGA-EX2.55_TECooled, 2.55µm extended indium gallium arsenide photodiode
DH_IGA-EX2.55_TE_LENSCooled, 2.55µm extended indium gallium arsenide photodiode

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