Sensor specifications
| MPY-01 | MPY-RS | MPY-RS2 | SPY | |
|---|---|---|---|---|
| Responsivity (kV/W)* | 7.5 | 13 | 70 | 7.5 |
| Noise (µV/√Hz) | 13 | 18 | 25 | 13 |
| NEP (pW/√Hz)* | 1500 | 1400 | 400 | 1500 |
| Detectivity (cm√Hz/W)* @ 10 Hz | 1.8⋅108 | 2.0⋅108 |
5.0⋅108 | 1.8⋅108 |
| Detectivity (cm√Hz/W)* @ 1 kHz | 0.4⋅108 | 1.1⋅108 | 2.0⋅108 | 0.4⋅108 |
| Detection bandwidth (depends on window) |
UV - THz | UV - THz | UV - THz | UV - THz |
| Frequency range | 1Hz - 500 Hz | 1 Hz - 5 kHz | 1 Hz - 100 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) |
Low noise power supply (±12V, Thorlabs LDS12B) |
| Dimensions (mm) | h: 63.0 w: 48.5 d: 20.4 |
h: 64.0 w: 48.5 d: 21.0 |
h: 59.8 w: 45.3 d: 21.0 |
h: 24.25 w: 28.0 d: 12.9 |
* Measured with broadband black body source at 150°C, central wavelength λ = 6.8 µm and KBr window
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).