Sensor specifications
| MPY-01 | MPY-RS | SPY | |
|---|---|---|---|
| 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 w: 48.5 d: 20.4 |
h: 64.0 w: 48.5 d: 20.4 |
h: 24.25 w: 28.0 d: 12.9 |
Available detector windows
| Material | Transmission region | ||
|---|---|---|---|
| Wavelength | Frequency | Wavenumber | |
| 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 |
Not sure which detector is best for you?
Please ask yourself these 6 questions:
- 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).