Patent ID: 9166375
Filing Date: 2015-10-20
Classification: B82Y,H01S

Abstract:
1. A semiconductor system, comprising: a heat sink; a distributed non-epitaxial Bragg reflector structure disposed over said heat sink, said distributed non-epitaxial Bragg reflector structure comprising a plurality of layers, each said layer comprising sub-layer pairs of titanium dioxide (Ti02) and silicon dioxide (Si02), said distributed non-epitaxial Bragg reflector structure further having a reflectivity greater than 99.9% to light at a wavelength of 460 nm; a gain structure disposed over said distributed Bragg reflector structure, comprising at least gallium nitride and having formed therein a plurality of quantum well structures which are the primary pump light absorbing elements in the gain structure, each said quantum well structure comprising a quantum well layer of substantially In said quantum well layers arranged in groups selected from single, double, and triple quantum well groups, to thereby form at least a portion of a gain structure sub-cavity, said gain structure sub-cavity having an primary optical axis; each said quantum well group located at and generally centered on an anti-node of a standing wave pattern of a beam at the lasing wavelength of the semiconductor gain structure determined by the local overlap between the antinodes of standing wave patterns at the pump wavelength and lasing wavelength along an axis of and within said semiconductor gain structure; a plurality of laser pump sources disposed substantially circumferentially around said gain structure such that each said source is configured to emit a pump beam at an angle other than parallel to said gain chip primary optical axis, and further disposed such that said pump beams converge to a spot on a surface of said gain structure; and a plurality of position control elements, comprised of acousto-optic modulators, each disposed between one of said plurality of laser pump sources and said gain structure for directing each said pump beam substantially to said spot on said surface of said gain structure wherein said position control elements are disposed such that said spot on said surface of said gain structure does not exceed 100 μm in diameter at full width half maximum.