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Ytterbium-doped borate fluoride laser crystals and lasers

United States Patent

5,677,921
October 14, 1997
View the Complete Patent at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
A new class of solid state laser crystals and lasers are formed from Yb-doped borate fluoride host crystals. The general formula for the host crystals is MM'(BO.sub.3)F, where M, M' are monovalent, divalent aria trivalent metal cations. A particular embodiment of the invention is Yb-doped BaCaBO.sub.3 F (Yb:BCBF). BCBF and some of the related derivative crystals are capable of nonlinear frequency conversion, whereby the fundamental of the laser is converted to a longer or shorter wavelength. In this way, these new crystals can simultaneously serve as self-frequency doubling crystals and laser materials within the laser resonator.
Schaffers; Kathleen I. (Pleasanton, CA), DeLoach; Laura D. (Manteca, CA), Payne; Stephen A. (Castro Valley, CA), Keszler; Douglas A. (Corvallis, OK)
The Regents of the University of California (Oakland, CA)
08/ 409,236
March 24, 1995
The United States Government has rights in this invention pursuant to Contract No. W-7405-ENG-48 between the United States Department of Energy and the University of California for the operation of Lawrence Livermore National Laboratory.