Model 663-15 High performance HgCdTe photodetecto/ MWIR and LWIR Response Single Detector for Very Wide Range TE and Liquid Nitrogen Cooling Integral Dual Gain Amplifier Fits McPherson Slit Assemblies

Mercury Cadmium Telluride (HgCaTe also known as MCT) Detectors The MWIR and LWIR versions of these detectors are high performance, cryogenically operated HgCdTe photodetector/amplifier modules. The NIR / MWIR version is TE cooled.

Model 663-14 Mercury Cadmium Telluride for 2 to 14-microns, 2 x 2 mm, This unit is a high performance photoconductor/receiver operated with a thermoelectric cooler for stabilization/cooling with a dual gain voltage amplifier. The detector’s bias voltage is linked to the amplifier power supply and no additional biasing is necessary. The PC/AMP is an AC coupled, dual gain detector system requiring a modulated input signal for operation. Comes with a mounting flange.

Models 663-15 and 663-16 Mercury Cadmium Telluride for 2 to 20-microns overall, 2 x 2 mm, 6-hour liquid Nitrogen dewar hold time, for modulated operation. This high performance photodetector features a dual gain amplifier. The output voltage is proportional to the input signal. The photodiode amplifier is a DC coupled dual gain system. Comes with bias supply and mounting flange.

The cryogenic units should be at LN2 temperature before turning on power to the amplifier. A funnel is provided to assist in the filling of the dewar, which is best accomplished by gradually filling and topping off over a several minute period. The amplifier has a dual gain function controlled by a switch on the backplate. The HI (up) position is x10 above the LO (down) position. Output is thru a BNC-type cable, and power is connected thru a shielded multi-wire cable terminated in a 9-pin Dsub connector or solder leads.

This detector is most often used with McPherson UV-Vis and NIR monochromator and spectrometer systems.

Specifications for a few versions of Mercury Cadmium Telluride Detector

Model	Size (mm)	Range (um)	Responsivity V/W pk [ Hi Gain ]	Bandwidth	Detectivity cm-Hz^1/2 /W	Cooling
663-14	2 x 2	1 to 5.4	2 x 10^5 / 10^4	5 to 50-kHz	-	2-stage TE
663-15	2 x 2	2 to 14	10^5	5 to 50-kHz	> 5 x 10^10 cm-Hz^1/2 /W	LN2 Dewar
663-16	1 x 1	2 to 20	>10^5	5 to 50-kHz	> 0.5 x 10^10 cm-Hz^1/2 /W	LN2 Dewar

Detector Response

 

This detector is most often used with McPherson UV-Vis and NIR monochromator and spectrometer systems.