Patent ID: 8213479
Filing Date: 2012-07-03
Classification: G02B,H01L,H01S

Abstract:
1. A high power laser diode comprising a plurality of laser light emitters, a plurality of light collimating means and a planar substrate means, each of said laser light emitters defining, in a direction perpendicular to a direction of propagation of an output laser beam, a fast axis y and a slow axis x, and each of said light collimating means being associated with a laser light emitter and configured for collimating said output laser beam at least in a fast axis direction y, wherein said planar substrate means comprises a planar alignment substrate and a planar spacer plate disposed on top of said planar alignment substrate and having a first surface and a second surface opposite to and in parallel with said first surface, said planar alignment substrate comprises a plurality of cut-outs, and at least one stop formed by a respective edge of said cut-outs, by abutment of a respective laser light emitter or of a respective submount used for mounting a laser light emitter to said at least one stop said planar alignment substrate aligns said plurality of laser light emitters to each other such that the optical axes of said laser light emitters are parallel to each other and a predetermined distance is defined between said laser light emitters, and said first surface and said second surface of said planar spacer plate extend perpendicular to said direction of propagation, said first surface abuts to a planar spacer alignment surface of said planar alignment substrate, which is perpendicular to said direction of propagation, and said second surface abuts to a plane rear side of said collimating means so that a thickness of said planar spacer plate precisely defines a distance between a respective laser light emitter and an associated light collimating means.