Abstract
We have constructed a far infrared bolometer detector by using a single crystal chip of p-type undoped thallium selenide as the temperature sensitive element. The bolometer operates at 1.6°K and achieves a noise equivalent power of 8.3 × 10 −15 W/√Hz with a time constant of 22 msec. The measured responsivity is 6 × 10 5 V/W. The detector should be suitable for infrared and microwave applications.
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