Cr-Doped yttrium gallium garnet laser
Patent 4490822 Issued on December 25, 1984. Estimated Expiration Date: 
June 17, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 17, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesChromium-doped beryllium aluminate lasers Broadly tunable chromium-doped beryllium aluminate lasers and operation thereof Patent #: 4272733 InventorsApplicationNo. 06/389316 filed on 06/17/1982US Classes:372/41Insulating crystalExaminersPrimary: Davie, James W.Attorney, Agent or FirmInternational ClassesH01S 3/16 (20060101)H01S 3/0915 (20060101) H01S 3/23 (20060101) H01S 3/094 (20060101) H01S 3/06 (20060101) AbstractA broadly wavelength-tunable laser is provided which comprises as the laser medium a single crystal of YGG:Cr3+. The laser may be operated over a broad temperature range from cryogenic temperatures to elevated temperatures. 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.Other References
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