Our cryogen-free bolometers are designed for unattended, continuous cold operation.
Benefits
No unexpected warmups and no need for expensive liquid helium
Interfaces to major spectrometers
Ultra low vibration
Noise and sensitivity on par with wet systems
No decrease in performance when operated at 50Hz
Water or air cooled compressor
Specifications
| Bolometers |
Spectral Response (µm) |
Operating Temp (K) |
Electrical Sensitivity (S[V/W]) | Noise Equivalent Power [W/Hz(1/2)] |
Noise Vn[nV/Hz(1/2)] |
Frequency Response (Optimum Chopping Frequency) |
|---|---|---|---|---|---|---|
| General Purpose 4.2 K Bolometer System |
15 – 2000 |
operation to 4.2 | ~ 2.4 X 105 | ~ 2.5 X 10-13 | ≤ 80 at 80Hz | < 500 Hz |
| Hi Res 4.2K Bolometer System |
15 – 500 |
operation to 4.2 | ~ 6.1 X 105 | ~ 6.5 X 10-14 | ≤ 40 at 80Hz | < 200 Hz |
System Configuration
Three positions filter wheel or single fixed filter option
Standard 4.2K bolometer filter configuration
• 13µm IR long pass filter
• 103µm IR long pass filter
• 285µm IR long pass filterOther filter options available upon request
System Performance
Cool down time: 6.5 hours
15µm-2000µm spectral range w/ HDWP window
Increase in noise over LHe system (6%) Drop in sensitivity over LHe system (2%)
Temperature sensor installed on cold plate for accurate temperature read-out