Advanced far infrared detectors

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Astrophysics, Bolometers, Far Infrared Radiation, Infrared Detectors, Nuclear Reactions, Photoconductivity, Photoconductors, Radiation Detectors, Semiconductor Devices, Semiconductors (Materials), Telescopes, Thermistors, Astronomy, Doped Crystals, Fabrication, High Altitude

Scientific paper

Recent advances in photoconductive and bolometric semiconductor detectors for wavelength 1 mm greater than lambda greater than 50 microns are reviewed. Progress in detector performance in this photon energy range has been stimulated by new and stringent requirements for ground based, high altitude, and space-borne telescopes for astronomical and astrophysical observations. The paper consists of chapters dealing with the various types of detectors: Be and Ga doped Ge photoconductors, stressed Ge:Ga devices, and neutron transmutation doped Ge thermistors. Advances in the understanding of basic detector physics and the introduction of modern semiconductor device technology have led to predictable and reliable fabrication techniques. Integration of detectors into functional arrays has become feasible and is vigorously pursued by groups worldwide.

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