MgB2 thin-film bolometer for applications in far-infrared instruments on future planetary missions
2012
Abstract A SiN membrane based MgB 2 thin-film bolometer, with a non-optimized absorber, has been fabricated that shows an electrical noise equivalent power of 2.56 × 10 −13 W/√Hz operating at 30 Hz and a responsivity of 702 kV/W. It is predicted that with the inclusion of a gold black absorber that an optical specific detectivity of 8.3 × 10 10 cm/√Hz/W at an operational frequency of 10 Hz, can be realized for integration into future planetary exploration instrumentation where high sensitivity is required in the 17–250 μm spectral wavelength range.
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