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United States Patent Application

View the Complete Application at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
Techniques for increasing the spatial and spectral brightness of laser arrays such as laser diode arrays are provided. Passive cavity designs are described that produce wavefront phase locking across the face of large arrays. These designs enable both spatial and spectral selectivity in order to coherently link the individual emitters that make up the diode array. Arrays of customized micro-optics correct aberrations of the individual apertures of the arrays while highly spectrally selective partial reflectors overcome the deleterious effects of inhomogeneities in local thermal environments of the individual emitters that are being phase locked together. Using these two technologies, along with intracavity diffractive beam coupling, solves two long standing problems that have prevented effective and robust phase locking of laser diode arrays.
Beach, Raymond J. (Livermore, CA), Deri, Robert J. (Pleasanton, CA), Johnson, Michael A. (Pleasanton, CA), Klingmann, Jeffrey L. (Livermore, CA), Molander, William A. (Livermore, CA), Rotter, Mark D. (San Ramon, CA), Runkel, Michael (Livermore, CA), Siders, Craig (Livermore, CA), Wu, Sheldon S. (Pleasanton, CA)
Lawrence Livermore National Security, LLC (Livermore CA)
14/ 502,850
September 30, 2014
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0001] The United States Government has rights in this invention pursuant to Contract No. DE-AC52-07NA27344 between the U.S. Department of Energy and Lawrence Livermore National Security, LLC, for the operation of Lawrence Livermore National Laboratory.