Broadly tunable chromium-doped beryllium aluminate lasers and operation thereof
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United States of America Patent
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Jun 9, 1981
Issued Date -
N/A
app pub date -
May 29, 1979
filing date -
Oct 20, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A high power, broadly wavelength-tunable laser is provided which comprises as the laser medium particular single crystals of chromium-doped beryllium aluminate (BeAl.sub.2 O.sub.4 :Cr.sup.3+) having the chrysoberyl structure, means for exciting the laser medium and tuning means. The laser may be operated over a broad temperature range from cryogenic temperatures to elevated temperatures. Elevated temperatures are preferred, however, since they result in higher laser gain. Emission is in a spectral range from red to infrared, and the laser is useful in the fields of defense, communications, isotope separation, photochemistry, etc. CROSS-REFERENCE TO PRIOR APPLICATION This application is a continuation-in-part of application Ser. No. 953,067, filed Oct. 20, 1978.
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