Coherent light generators – Particular active media – Insulating crystal
Patent
1989-12-29
1991-03-26
Gonzalez, Frank
Coherent light generators
Particular active media
Insulating crystal
372 99, 372 91, 372 19, H01S 316
Patent
active
050035479
ABSTRACT:
A room temperature solid state laser for producing a laser emission at a wavelength of substantially 1.96 microns is disclosed. In a preferred embodiment, the laser includes: a laser cavity defined by a plurality of coated reflective elements to form a reflective path thereamong; a laser crystal disposed in the laser cavity and capable of lasing at substantially 1.96 mircons and 2.01 microns when excited; and means for exciting the laser crystal to lase at substantially 1.96 microns and at substantially 2.01 microns. The laser crystal is comprised of a host crystal material capable of accepting Cr.sup.3+ and Tm.sup.3+ ions. Through their respective reflectivities at each of the wavelengths at substantially 1.96 microns and 2.01 microns, the coated reflective elements collectively operate to produce substantial loss in radiation at the wavelength of substantially 2.01 microns and to reflect radiation from the excited laser crystal at a wavelength which will sustain a laser emission only at a wavelength of substantially 1.96 microns.
REFERENCES:
patent: 3711787 (1973-01-01), Snitzer et al.
patent: 3727150 (1973-04-01), Robinson et al.
patent: 4615034 (1986-09-01), von Gunten et al.
patent: 4811349 (1989-03-01), Payne et al.
patent: 4841530 (1989-06-01), Chai et al.
Publication, High Efficiency 2.09 um Flashlamp-Pumped, Laser, by G. J. Ques, Annette Rosesnbaum, Charles L. Marquardt, and Leon Esterowitz, Applied Physics Letters 55(11), 11 Sep. 1989.
Publication, Thulium Yag Laser Operation at 2.01 .mu.m, by Mark E. Storm, Donald J. Gettemy, Norman P. Barnes, Patricia L. Cross and Milan R. Kokta, Applied Optics, vol. 28, No. 3, 1 Feb. 1989.
Esterowitz Leon
Pinto Joseph F.
Quarles Gregory J.
Gonzalez Frank
Jameson George
McDonnell Thomas E.
Morse Susan S.
The United States of America as represented by the Secretary of
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