The optical performance of frequency selective bolometers

Details The optical performance of frequency selective bolometers The optical performance of frequency selective bolometers

2006-10-19

arxiv.org/abs/astro-ph/0610580v1

Appl.Opt.45:7643-7651,2006

Astronomy and Astrophysics

Astrophysics

32 pages, 9 figures

Scientific paper

10.1364/AO.45.007643

Frequency Selective Bolometers (FSBs) are a new type of detector for millimeter and sub-millimeter wavelengths that are transparent to all but a narrow range of frequencies as set by characteristics of the absorber itself. Therefore, stacks of FSBs tuned to different frequencies provide a low-loss compact method for utilizing a large fraction of the light collected by a telescope. Tests of prototype FSBs, described here, indicate that the absorption spectra are well predicted by models, that peak absolute absorption efficiencies of order 50% are attainable, and that their out-of-band transmission is high.

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