Basic Bolometer System
composite silicon bolometer systems are housed in our HDL-5
model, liquid helium
dewar with a liquid nitrogen cooled radiation shield.
greater than 20 hours between fills for 4.2K systems and 10
The detector comes with an IR light collecting cone
vacuum-sealed wedged window, field of view baffling, and low
bolometer system is then outfitted with a single cut-on IR
filter or a
manually operated, 2 or 3 position filter wheel. We offer a
selection of far IR cut-on long pass filters that range from
your application requires longer hold times, increased work
detectors, or more filter positions are required, please let
us know. We're
committed to building a custom designed system to meet your
Special requests for custom designs are always welcome.
Purpose 4.2K Bolometer System
4.2K Bolometer System
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.
1.6K Bolometer System
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.
1.6K Bolometer System
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.
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.