DETECTORS

Choosing the right detector could be the most important decision when specifying a spectroradiometer. From the experience gained in producing hundreds of spectral measurement systems, we have assembled a range of detectors to cover most applications. Each detector is properly housed, complete with any associated circuitry and can be mounted directly at the exit slit of any of our monochromators. The detectors below represent our standard range, but we also have working knowledge of many others, so please consult us if you do not find the detector you want.
 
 
 
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Detector-range:

DH-Si
DC; AC; I
250-1100nm high quality, UV-amplified Si-photodiode, 1cm˛ active area
DH-GE(3)-Te
DC; AC; I;
800-1700nm Ge-photodiode with peltier cooling element (requires CPS1), 3mm active area diameter
DH-InGaAs(2)
DC; AC; I;
800-1700nm Indium Gallium Arsenid photodiode, 2mm active area diameter
DH-InGaAs(3)
DC; AC; I;
800-1700nm Indium Gallium Arsenid photodiode, 3mm active area diameter
DH-InGaAs-Ex-Te
DC; AC; I;
800-2200nm Indium Gallium Arsenid photodiode with extended spectral range and peltier cooling element (requires CPS1), 3mm active area diameter
DH-10
DC; AC; I;
200-600nm photomultiplier with side-window and Bialkali photocathode (requires power supply 215)
DH-10-Te2
DC; AC; I;
200-600nm comparable to DH-10, but includes peltier cooling element (requires CPS2)
DH-30
DC; AC; I
200-850nm photomultiplier with side-window and Multialkali photocatode. (requires power supply 215)
DH-30-Te
DC; AC; I
200-850nm comparable to DH-30, but includes peltier cooling element (requires CPS2)
DH3
DC; AC; I
200 - 850nm photomultiplier with front window for radiometric applications with S20 photocathode and great linear dynamic range (requires power supply 215)
DH3(Bl)
DC; AC; I;
200-600nm photomultiplier with front window for UV applications with Bialkali photocathode (requires power supply 215)
DH3-Te
DC; AC; I;
200-850nm comparable to DH3, but includes a peltier cooling element (requires CPS2)
DH-PbS-Te
AC; U
1 - 3µm lead-sulfide photodetector for IR-applications with peltier cooling element (requires power supply 215 and CPS2);
36mm˛ of active area.
DH-PbSe-Te
AC; U
1 - 5µm lead-selenium photodetector with peltier cooling element; 9mm˛ of active area
DH-PbS/Si-Te
AC; U / DC; AC; I
250-3000nm Dual detector with Si photodiode and Lead-Sulfide photodetector (requires power supply 215 and CPS1)
DH-InSb
AC; I
1.5-5.5µm indium antimonide detector with Dewar-cooling (liquid nitrogen; 12 hour hold time); 3mm of active area diameter
DH-MCT
AC; U
4 - 12µm Mercury-cadmium-tellurium-detector with dewar cooling (requires power supply 275); 2mm of active area diameter
DH-Py
AC; U
1 - 40µm pyroelectric detector with KRS5 window, includes pre-amplifier and power supply module; requires power supply 217.

DC = direct current/light operation; AC = alternating current / light operation (required for lock-in amplifiers);
I = electrical current output; U = electrical voltage output;
spectral overview (gif)
 
 
 
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CPS1/20/50

Peltier cooler controllers/power supplies
Model Case For use with... e.g.
CPS1 Free-standing 1 and 2 stage peltier cooled solid state detectors DH-PbS-Te
CPS1M Module 1 and 2 stage peltier cooled solid state detectors DH-PbS-Te
CPS1M-DUAL Module Dual version of CPS1M DH-PbS-Te
CPS20 Free-standing Side window PMT DH-00-Te
CPS20M Module Side window PMT DH-00-Te
CPS50 Free-standing End window PMT DH-50-Te
CPSE Weatherproofed Envirobox systems Envbox150
Free-standing units are mains powered.
Modular controllers require 417/217/T bin with -CP option.
 
 
 
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Filter Based Detectors

We also offer a range of filter based detectors offering “close match” spectral responses to the desired function. For example, the DH400-VL photometric detector provides high accuracy illuminance and luminance measurements.
Some of the most common detector types are listed below:
Model Spectral Function Wavelength range Normal calibration
DH400-VL-x Photometric 380-780nm lux
DH400-VS-x Scotopic 380-780nm lux
DH400-XYZ x,y,z Colorimetric 380-780nm (x,y), K, lux
DH400-UVA-x Radiometric UV-A 315-400nm W/m 2
DH400-UVB-x Radiometric UV-B 280-315nm W/m˛
DH400-UVC-x Radiometric UV-C 250-280nm W/m˛
DH400-UV-x Radiometric UV 250-400nm W/m˛
DH400-R01-x Radiometric ‘blue’ 400-500nm W/m
DH400-R02-x Radiometric ‘red’ 700-800nm W/m˛
DH400-R03-x Radiometric ‘visible’ 400-800nm W/m˛
DH400-R04-x Radiometric ‘near IR’ 800-1000nm W/m˛
DH400-R05-x Radiometric ‘vis-NIR’ 400-1000nm W/m˛
DH400-yyy-x Custom /user defined within 200-1700nm as required
-x: Detector options such as with/without diffuser;
-yyy: Special or user defined spectral function.

The ORM400 Optical Radiation Meter is ideally suited to display the measurements from the DH400 range of detectors as well as third party current generating detectors. The ORM400 has a USB 2.0 interface and is supplied with powerful calibration features and data display functions. It includes a library of standard spectral light sources to which customers may add. This accommodates greatest accuracy and flexibility when measuring light sources with a filter based instrument.
 
 

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