Optical Materials Investigation for Ultraviolet Down-Converters
ARMY ELECTRONICS COMMAND FORT MONMOUTH NJ
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The report covers the first four months effort on the development of an ultraviolet down-converter to selected visible spectral regions. It consists mainly of knowledge drawn from literature searches, discussions with personnel in-house and in private industry, recent solid state laser spectroscopic research experience, and some preliminary spectroscopic data. Possible solid state down-converter materials, their transmission regions and methods of production for crystalline materials are discussed. The spectroscopic properties of rare earth ions which are especially suited for radiation conversion via visible fluorescence are reviewed. Finally, the performance properties of some of these materials are summarized and recommendations for further research are given.