Coherent light generators – Particular active media – Plural active media or active media having plural dopants
Patent
1995-09-07
1998-04-21
Scott, Jr., Leon
Coherent light generators
Particular active media
Plural active media or active media having plural dopants
372 10, 372 18, 372 94, 372 41, H01S 314
Patent
active
057426325
ABSTRACT:
A laser host material LuLF (LuLiF.sub.4) is doped with holmium (Ho) and thulium (Tm) to produce a new laser material that is capable of laser light production in the vicinity of 2 .mu.m. The material provides an advantage in efficiency over conventional Ho lasers because the LuLF host material allows for decreased threshold and upconversion over such hosts as YAG and YLF. The addition of Tm allows for pumping by commonly available GaAlAs laser diodes. For use with flashlamp pumping, erbium (Er) may be added as an additional dopant. For further upconversion reduction, the Tm can be eliminated and the Ho can be directly pumped.
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Filer, E. D., et al., "YLF Isomorphs fo Ho and Tm Laser Application", Optical Society of America, OSA Proceedings on Advanced Solid State Laser, vol. 20, 1994, pp. 127-130.
Harris, I. R. et al., "the Relationships between crystal growth bbehavior and constitution in the systems LiF-LuF3, LiF-ErF3, and Lif-YF3", Journal of Materials Science, 1983, pp. 1235-1243.
Cockayne, J.G. et al., "The czochralski grpwth and laser characteristics of Li(Lu,Er,Tm,Ho)F4 scheelite single crystals", Journal of Crystal Growth, 1981, pp. 407-413.
Barnes Norman P.
Filer Elizabeth D.
Jani Mahendra G.
Lockard George E.
Morrison Clyde A.
Edwards Robin W.
Jr. Leon Scott
The United States of America as represented by the Administrator
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