Coherent light generators – Particular pumping means – Pumping with optical or radiant energy
Patent
1991-05-23
1992-02-04
Sikes, William L.
Coherent light generators
Particular pumping means
Pumping with optical or radiant energy
372 41, H01S 3091, H01S 3092
Patent
active
050864327
ABSTRACT:
A laser system and method for producing a laser emission at a wavelength of ubstantially 2.8 microns is disclosed. In a preferred embodiment of the invention, the laser system comprises a crystal having a host material doped with erbium; a laser cavity defined by first and second reflective elements at opposing ends of the crystal to form a reflective path therebetween; and resonant pumping means for directly pumping the .sup.4 I.sub.11/2 upper laser state of the erbium with a pump beam at a preselected wavelength to cause the erbium-doped crystal to produce a laser emission corresponding to the .sup.4 I.sub.11/2 .fwdarw..sup.4 I.sub.13/2 laser transition having a wavelength of substantially 2.8 microns, a portion of the laser emission at substantially 2.8 microns being outputted from one of the first and second reflective elements.
REFERENCES:
patent: 4922496 (1990-05-01), Po
patent: 4974230 (1990-11-01), Hemmati
patent: 5008890 (1991-04-01), McFarlane
patent: 5014279 (1991-05-01), Esterowitz et al.
patent: 5042039 (1991-08-01), Edagawa et al.
Esterowitz Leon
Stoneman Robert C.
Jameson George
McDonnell Thomas E.
Sikes William L.
The United States of America as represented by the Secretary of
Wise Robert E.
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