Coherent light generators – Particular active media – Plural active media or active media having plural dopants
Patent
1992-12-30
1994-02-15
Scott, Jr., Leon
Coherent light generators
Particular active media
Plural active media or active media having plural dopants
372 41, H01S 314
Patent
active
052873781
ABSTRACT:
The directly pumped holmium (Ho) quasi-two level laser of the invention comprises a directly pumped holmium laser having a host material doped with an amount of holmium ions sufficient to produce an output laser emission at a wavelength of about 2.1 .mu.m when the holmium laser is pumped by a pump beam at a wavelength of about 2 .mu.m and a pumping laser for producing the pump beam. In an exemplary embodiment, the pumping laser comprises a Cr,Tm:YAG laser pumped by a flashlamp.
REFERENCES:
patent: 4965803 (1990-10-01), Esterowitz
patent: 5038353 (1991-08-01), Esterowitz
Dixon et al.; "Low-Threshold 2 .mu.m Holmium Laser Excited by Non-Radioace Energy Transfer from Fe.sup.3t in YAG"; Opt. Lett., vol. 17(24); Dec. 15, 1992.
Bowman Steven R.
Feldman Barry J.
Jameson George
Jr. Leon Scott
McDonnell Thomas E.
The United States of America as represented by the Secretary of
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