MODULATORS :: PRODUCTS :: Photo Detectors
Detection systems for photoelastic modulator systems have several specific requirements which must be met for maximum flexibility of operation.
These requirements include:
- Frequency response. DC to several times the operating frequency of the PEM being used.
- Dark-current and/or background DC null.
- Preamplification for current to voltage conversion and buffering for impedance matching to signal cables.
For many applications, separate lowpass or DC signals and wide-band AC signals derived from the detector output are required. With the help of the Signal Conditioning Unit , this is possible.
Hinds Instruments offers a line of silicon and germanium photodiode and avalanche photodiode detectors and accessories which meet these requirements. The DET-100 and APD-100 detectors all include a universal power supply.
|
DETECTOR OPTIONS |
| DET-100 Specifications |
|
Model |
Type |
Spectral Range
(nm) |
Active Area |
Frequency
Response |
|
001 |
Si-PC |
350 - 950 |
5 mm2 |
DC - 500 kHz |
|
002 |
Si-PC |
350 - 950 |
16 mm2 |
DC - 500 kHz |
|
003 |
Si-PV |
350 - 950 |
5 mm2 |
DC - 160 kHz |
|
004 |
Si-PV |
350 - 950 |
16 mm2 |
DC - 160 kHz |
|
005 |
Si-PV |
200 - 950 |
5 mm2 |
DC - 260 kHz |
|
006 |
Si-PV |
200 - 950 |
20 mm2 |
DC - 160 kHz |
|
007 |
Ge-PV |
800 - 1600 |
3 mm2 |
DC - 260 kHz |
|
|
|
|
|
| APD-100 Specifications |
|
001 |
Si-APD |
200 - 1000 |
19.5 mm2 |
DC - 450 kHz |
|
PC = Photoconductive
PV = Photovoltaic |
For an explanation of the difference between Photoconductive and Photovoltaic Detectors, please click here .
Options
Signal Conditioning Unit
DET-90 Power Supply