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Blackbody heterodyne receiver for NEP measurements and wideband photodetector characterization

E R Brown1

  • 1Hughes Aircraft Company, Space & Communications Group, PO Box 92919, Airport Station, Los Angeles, California 90009, USA.

Applied Optics
|April 17, 2010
PubMed

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The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell. Samples for...