Cryogenic Solutions and IR Instruments for Research
 
+1 (520) 622-7074  |  infrared@irlabs.com

Bolometers
Basic Bolometer System
BolometerAll composite silicon bolometer systems are housed in our HDL-5 model, liquid helium dewar with a liquid nitrogen cooled radiation shield. Standard hold times are greater than 20 hours between fills for 4.2K systems and 10 hours for our 1.6K models.

The detector comes with an IR light collecting cone assembly, vacuum-sealed wedged window, field of view baffling, and low noise electronics. The bolometer system is then outfitted with a single cut-on IR filter or a cold, manually operated, 2 or 3 position filter wheel. We offer a selection of far IR cut-on long pass filters that range from 10 to 285µm.

If your application requires longer hold times, increased work height, dual detectors, or more filter positions are required, please let us know. We're committed to building a custom designed system to meet your individual needs. Special requests for custom designs are always welcome.

General Purpose 4.2K Bolometer System 

  • Our most popular and versatile bolometer system covers a wide range of applications. It consists of a 4.2K bolometer detector element bonded to a 2.5mm diamond absorber. It operates best in the range of 15 to 2000µm (20THz to 150GHz) with modulation frequencies in the 200 to 400Hz range. Hi-Res

4.2K Bolometer System
  • This system provides a lower thermal conductivity detector and increased spectral resolution. The configuration offers a slower responding system with modulation frequencies best kept below 200Hz. This system is more sensitive and the NEP values are an order of magnitude lower than the general purpose 4.2K system.

Standard 1.6K Bolometer System
  • Similar to our general purpose 4.2K system in spectral response (15 to 2000µm) with the added benefits provided by lowering the temperature of the detector. These benefits include a lower NEP, higher sensitivity, and the advantage of a quick response time. This system can work at modulation frequencies greater than 1 KHz.

Far-IR 1.6K Bolometer System
  • Specifically configured to detect the lower energy signals present in the longer wavelengths of the IR spectrum and will perform well from 300µm to 5mm. It has a very low thermal conductivity compared to our other bolometer systems. This aids in providing longer integration times to capture the low signal strengths and is best operated at modulation frequency less than 300Hz.

Bolometer Specifications