Patent ID: 9042419
Filing Date: 2015-05-26
Classification: G02F,H01S

Abstract:
1. A microchip laser converter comprising: a laser diode for emitting a laser radiation at a wavelength of about 400 nm to about 450 nm; a cylindrical microlens of a predefined diameter for focusing the laser radiation emitted from the laser diode; and a laser chip comprising a semiconductor substrate, a bottom cladding layer, a top cladding layer, a waveguide and active regions, the waveguide comprising a set of graded index layers of one of ZnMgSSe/ZnSe superlattices (SLs), and a layer of one of ZnSSe/ZnSe SL with constant band gap surrounding the active region, wherein the set of graded index layers is composed of periodically repeated thin ZnMgSSe and ZnSe layers, with different thickness ratio between different graded index SLs, wherein the active region comprises one or more ZnSe Quantum Wells (QWs) with a plurality of CdSe quantum dot (QD) insertions each located in one of a closely spaced thin ZnSe QWs or all located in a thick single ZnSe QW placed in a maximum electromagnetic field of fundamental mode of the waveguide, wherein the laser chip is configured to: