title: Evaluation of an InSb infrared detector at liquid N(2) and liquid He temperatures.
abstract: The performance of an InSb infrared detector has been evaluated at liquid nitrogen and liquid helium cryogenic temperatures. A significant improvement in sensitivity was observed when the detection system was Johnson noise limited. With 300-K background radiation and diffraction limited throughout, the NEP of the detector is 1.5 x 10(-16) W Hz(-(1/2)) at 1.65 microm. Potential improvement is expected especially for astro-physical observations which are made in lower photon background conditions.
authors.forename: Y X
authors.initials: YX
authors.lastname: Zhang
authors.forename: F O
authors.initials: FO
authors.lastname: Williamson