|Sensitivity||20 mV/µW||25 mV/µW||20 mV/µW|
|NEP||350 pW/√Hz||750 pW/√Hz||350 pW/√Hz|
|Detection Bandwidth (depends on window)||UV - THz||UV - THz||UV - THz|
|Frequency Response||1Hz - 200 Hz||1 Hz - 5 kHz||1Hz - 200 Hz|
|Power Supply||MN21 battery
(>30h operating time)
|Low noise power supply (±12V, Thorlabs LDS12B)||Low noise power supply (±12V, Thorlabs LDS12B)|
|Dimensions (mm)||h: 64.0
Available detector windows
|KBr||200 nm - 30 µm||(10 - 1,500) THz||(333 - 50,000) cm-1|
|CsI||400 nm - 40 µm||(7.5 - 750) THz||(250 - 25,000) cm-1|
|Si||> 1.2 µm||< 250 THz||< 8,333 cm-1|
|PTFE||(20 - 40) µm and > 60 µm||(7.5 - 15) THz and < 5 THz||(250 - 500) cm-1 and < 167 cm-1|
|HDPE||> 40 µm||< 7.5 THz||< 250 cm-1|
|Diamond||> 225 nm
||< 1,332 THz
||< 44,444 cm-1
- What repetition rate is your light source?
Pyroelectric detectors can only observe a change of radiation intensity - continuous wave (CW) sources will not give a signal. If you want to measure a CW source, you have to chop the beam at a frequency suitable for your detector. The MPY-RS detector can be used for repetition rates / chopping frequencies of many kHz.
- What is your expected incident power range?
All detectors are highly sensitive. If you want to measure higher power you probably need to attenuate your beam (see our tutorial).
- Do you need an external power supply for long-term measurements?
Both MPY-RS and SPY detectors are powered by an external power supply.
- Do you need vacuum compatibility?
Take a look at our SPY vacuum compatible version.
- Do you have size limitations in your setup?
Compare the detector dimensions (see table 1 above). The SPY detector has the smallest footprint.
- Which incident wavelength range do you want to cover?
Our pyroelectric detectors are sensitive from the UV to the terahertz / far infrared. The usable wavelength range only depends on the detector window. We offer various windows for all detectors (see table 2 above).