Abstract
We have constructed bolometers operating at temperatures of 0.1 K and 0.2 K cooled by adiabatic demagnetization. The electrical noise equivalent power (NEP) of the bolometers was found to be 1.8×10−16 W/Hz1/2 and 6.6×10−16 W/Hz1/2 respectively. These values are within a factor of two of the expected performance based upon bolometer theory. The thermistor material used was gallium doped single crystal germanium, for which we find a resistivity temperature dependence of the form ρ = ρo exp (AT−1/2).
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Lesyna, L., Roellig, T.P.L. & Kittel, P. Bolometers operated at 0.1 K and 0.2 K cooled by adiabatic demagnetization. Int J Infrared Milli Waves 5, 755–760 (1984). https://doi.org/10.1007/BF01010197
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DOI: https://doi.org/10.1007/BF01010197