Theoretically limited temperature sensitivity of thermal detectors with restricted spectral range

Details Theoretically limited temperature sensitivity of thermal detectors with restricted spectral range Theoretically limited temperature sensitivity of thermal detectors with restricted spectral range

Jul 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2225...97t&link_type=abstract

Proc. SPIE Vol. 2225, p. 97-108, Infrared Detectors and Focal Plane Arrays III, Eustace L. Dereniak; Robert E. Sampson; Eds.

Physics

Scientific paper

Spectral characteristics of specific detectivity D(superscript *)((lambda) (subscript m)) and noise equivalent temperature difference NETD(superscript *)((lambda) (subscript m)) were calculated for background noise limited thermal detectors with restricted spectral range ((lambda) (subscript m) - cut-off wavelength). In the actual spectral range ((lambda) (subscript m)<15 micrometers ) thermal detectors are able to ensure the same values of D(superscript *)((lambda) (subscript m)) and NETD(superscript *)((lambda) (subscript m)) as for quantum detectors. NETD(superscript *)((lambda) (subscript m)) and D(superscript *)((lambda) (subscript m)) values are shown to be connected by `kT(superscript 2)-rule': NETD(superscript *)((lambda) (subscript m)) - (root)2kT(superscript 2)D(superscript *)((lambda) (subscript m)). It was accentuated that this rule may be applied to quantum photodetectors but with some definitions. The approximations were offered permitting to calculate values of D(superscript *)((lambda) (subscript m)) and NETD(superscript *)((lambda) (subscript m)) in all spectral ranges with the accuracy of not worse than 2%. It was shown that as D(superscript *)((lambda) (subscript m)) of an ideal thermal detector with a cold filter increases the cooling temperature necessary for achievement of theoretical limited values of D(superscript *)((lambda) (subscript m)) and NETD(superscript *)((lambda) (subscript m)) also increases. Such a behavior is opposite to that known for quantum photodetectors.

Affiliated with

Also associated with

No associations

Rating

Theoretically limited temperature sensitivity of thermal detectors with restricted spectral range does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Theoretically limited temperature sensitivity of thermal detectors with restricted spectral range, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Theoretically limited temperature sensitivity of thermal detectors with restricted spectral range will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-824485