US Patent 7359421 Red light laser
Patent 7359421 was granted and assigned to Mytek, LLC on April, 2008 by the United States Patent and Trademark Office.
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A semiconductor material vertical cavity surface emitting laser for emitting narrow linewidth light comprising a compound semiconductor material substrate and pairs of semiconductor material layers in a first mirror structure on the substrate of a first conductivity type each differing from that other in at least one constituent concentration and each first mirror pair separated from that one remaining by a first mirror spacer layer with a graded constituent concentration. An active region on the first mirror structure has plural quantum well structures separated by at least one active region spacer layer and there is a second mirror structure on the active region similar to the first but of a second conductivity type. A pair of electrical interconnections is separated by said substrate, said first mirror structure, said active region and said second mirror structure.
US Patent 07359421 Red light laser US Patent 7359421 Red light laser
US Patent 07359421 Red light laser
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