Accession Number : ADD013750

Title :   Narrow Spectral Bandwidth, UV Solar Blind Detector.

Descriptive Note : Patent, Filed 30 Jun 86, patented 15 Mar 88,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Geller, Myer

Report Date : 15 Mar 1988

Pagination or Media Count : 13

Abstract : Detection of 253.7 nm radiation in the solar blind UV spectrum is enhanced by using an energy wavelength shifter with a photomultiplier tube which senses fluorescent emissions. A ruby block wavelength shifter has a coating that passes energy including the 253.7 nm radiation and a layer that passes radiation within a bandwidth including the fluorescent emissions. The ruby block absorbs the energy of the 253.7 nm radiation and produces fluorescent emissions. The ruby block absorbs the energy of the 253.7 nm radiation and produces fluorescent emission that passes through the layer. The photomultiplier tube is sensitive to the fluorescent wavelengths to aid in detection. The relatively large coated area provides a wide aperture, wide field of view detection of the 253.7 nm radiation.

Descriptors :   *PATENTS, *RUBY, *FREQUENCY SHIFT, *ULTRAVIOLET COMMUNICATIONS, *OPTICAL COATINGS, BAND SPECTRA, BANDWIDTH, DETECTION, EMISSION, ENERGY, FLUORESCENCE, NARROWBAND, PATENTS, PHOTOMULTIPLIER TUBES, RUBY, SOLAR SPECTRUM, ULTRAVIOLET SPECTRA, ULTRAVIOLET FILTERS

Subject Categories : Ultraviolet Detection and Detectors
      Optics
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE