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Distributed Bragg reflectors with reduced optical absorption

United States Patent

August 16, 2005
View the Complete Patent at the US Patent & Trademark Office
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A new class of distributed Bragg reflectors has been developed. These distributed Bragg reflectors comprise interlayers positioned between sets of high-index and low-index quarter-wave plates. The presence of these interlayers is to reduce photon absorption resulting from spatially indirect photon-assisted electronic transitions between the high-index and low-index quarter wave plates. The distributed Bragg reflectors have applications for use in vertical-cavity surface-emitting lasers for use at 1.55 .mu.m and at other wavelengths of interest.
Klem; John F. (Albuquerque, NM)
Sandia Corporation (Albuquerque, NM)
10/ 609,294
June 26, 2003
GOVERNMENT RIGHTS This invention was made with Government support under Contract DE-AC04-94AL85000 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.