Patent ID: 7382808

Claim:
A method for making a laser, the method comprising: (i) providing a planar laser having an output with a relatively small cross section size direction orthogonal to a major axis of the planar laser and a relatively large cross section size direction orthogonal to the relatively small cross section size direction and to the major axis of the planar laser, wherein the planar laser's beam travels along an optical track of the planar laser to the output; (ii) disposing a planar reflector in the optical track of the planar laser a distance from the output; (iii) disposing at least one Bragg grating in the optical track of the planar laser, wherein the planar laser's beam is reflected from the Bragg grating to the planar reflector and back to the Brag grating to provide spectral and angular selectivity before traveling to the output; and (iv) selecting one spatial mode oscillation of the planar laser based on a thickness of the Bragg grating, wavelength of the planar laser and a length of the output in the relatively large cross section size direction.