Patent ID: 7433374
Filing Date: 2008-10-07
Classification: H01S

Abstract:
1. Laser apparatus, comprising: a multilayer semiconductor laser heterostructure including a first waveguide; a second waveguide surmounting the semiconductor laser heterostructure, said second waveguide including a layer of an optically nonlinear material; an arrangement for optically pumping said laser heterostructure such that radiation having a fundamental wavelength is generated therein and propagates in the first waveguide; and wherein said heterostructure and said second waveguide are configured and arranged such that fundamental-wavelength radiation is coupled from said first waveguide into said second waveguide, propagates therein, and is converted by said optically nonlinear material layer into radiation having the second-harmonic wavelength of said fundamental wavelength, and second-harmonic-wavelength radiation is delivered from the second waveguide as output radiation.