John H Walling

US Patent:

42727332, Jun 9, 1981

Filed:

May 29, 1979

Appl. No.:

6/043513

Inventors:

John C. Walling - Morristown NJ
Robert C. Morris - Ledgewood NJ
Otis G. Peterson - Dover NJ
Hans P. Jenssen - Belmont MA

Assignee:

Allied Chemical Corporation - Morris Township, Morris County NJ

International Classification:

H01S 314

US Classification:

331 945F

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.