Patent ID: 6804276
Filing Date: 2004-10-12
Classification: G11B,H01S

Abstract:
A semiconductor laser device, comprising:a semiconductor laser chip having a first surface of which shape is approximately rectangular or square, and having an emission facet for emitting a laser beam; and a sub-mount having a first surface on which the semiconductor laser chip is provided, and at least one second surface vertical to the first surface, the first surface of the sub-mount having parallel first edges and parallel second edges between the first edges, the second edge being inclined at an angle of 3 to 30 degrees to the first edges, the first edges being parallel to the edges of the first surface of the semiconductor laser chip, one of the second edges being corresponding to the emission facet, wherein the one second surface including one of the second edges corresponding to the emission facet inclines along with the at least one of the second edges and reflects an incident light orthogonal to the emission facet of the semiconductor laser chip to a different direction in accordance with the angle of the second surface.