Patent ID: 8213470
Filing Date: 2012-07-03
Classification: H01S

Abstract:
1. A method for making a microchip laser, comprising: bonding a gain media, a frequency doubling material, and a quarter waveplate to form a laser-cavity chip assembly, wherein the gain media is configured to produce a fundamental lasing light at a fundamental frequency in response to a pump light, wherein the frequency doubling material is configured to convert the fundamental lasing light to a frequency-doubled lasing light, wherein the gain media has a first substantially flat surface, wherein the quarter waveplate has a second substantially flat surface parallel to the first substantially flat surface; forming a first reflective film on the first substantially flat surface of the gain media to form a first cavity mirror; forming a second reflective film on the second substantially flat surface of the quarter waveplate to form a second cavity mirror; and cutting, with a dicing saw, a first pair of parallel grooves across a full length of the second reflective film along a first direction; cutting, with the dicing saw, a second pair of parallel grooves across a full width of the second reflective film along a second direction, wherein the first pair of parallel grooves intercept with the second pair of parallel grooves to define a center reflective portion configured to suppress higher order transverse modes in the frequency-doubled lasing light and to substantially produce a single TEM