Patent ID: 9008146
Filing Date: 2015-04-14
Classification: H01S

Abstract:
1. A semiconductor laser excitation solid-state laser, comprising: a planar waveguide-type solid-state laser element in which claddings with a refraction index different from that of a plate-shaped solid-state laser medium are formed on both surfaces of the solid-state laser medium, and which is disposed on a solid-state laser substrate; an LD array in which a light-emitting layer sandwiched between cladding layers is formed on an LD substrate, and which generates laser light for exciting the solid-state laser medium from an end face thereof; and a sub-mount substrate on which joining layers of two different thicknesses are formed by metal plating on the same plane; wherein the planar waveguide-type solid-state laser element is joined to the sub-mount substrate on a surface on the opposite side of a surface on which the solid-state laser substrate is mounted such that the planar waveguide-type solid-state laser element is sandwiched between the sold-state laser substrate and the sub-mount substrate, via a joining layer of one of the thicknesses out of the joining layers of the two different thicknesses, and the LD array is joined to the sub-mount substrate on a surface on the light-emitting layer side, via another joining layer of the other thickness out of the joining layers of the two different thicknesses.