Patent ID: 6628692
Filing Date: 2003-09-30
Classification: H01S

Abstract:
A solid-state laser device comprising:a substrate; a laser crystal formed on said substrate, said laser crystal oscillating a laser beam from a second end face thereof when an excitation beam is projected to a first end face thereof, a broad area type excitation beam emission element emitting said excitation beam, said excitation beam emission element having a small divergence-angle axis and a large divergence-angle axis, said excitation beam emission element having a first predetermined width as a dimension corresponding to said small divergence-angle axis; and a multimode waveguide path formed on said substrate, said excitation beam being transmitted through said multimode waveguide path, said multimode waveguide path having a first end portion on which said excitation beam emitted by said excitation beam emission element impinges and a second end portion which opposes said first end face of said laser crystal, said excitation beam being emitted from said second end portion, wherein a width of said multimode waveguide path at said first end portion corresponds to said first predetermined width of said excitation beam emission element.