Optical performance of frequency-selective bolometers.
Frequency-selective bolometers (FSBs) are a new type of detector for millimeter and submillimeter 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 indicate that the absorption spectra are well predicted by models, that peak absolute absorption efficiencies of the order of 50% are attainable, and that their out-of-band transmission is high.
Perera
T A
TA
Kavli Institute for Cosmological Physics, University of Chicago, Chicago, IL 60637, USA. perera@astro.umass.edu
Downes
T P
TP
Meyer
S S
SS
Crawford
T M
TM
Cheng
E S
ES
Chen
T C
TC
Cottingham
D A
DA
Sharp
E H
EH
Silverberg
R F
RF
Finkbeiner
F M
FM
Fixsen
D J
DJ
Logan
D W
DW
Wilson
G W
GW