Patent ID: 7221694

Claim:
A solid-state laser rod excitation module comprising: a cooling sleeve disposed on substantially the same axis as a solid-state laser rod so that it surrounds said solid-state laser rod; a diffusive reflection tube disposed on substantially the same axis as said solid-state laser rod so that it surrounds said solid-state laser rod and said cooling sleeve; a semiconductor laser light emitting means including a semiconductor laser provided with at least one bar-shaped, or rectangular, component including a plurality of laser-light-emitting portions aligned and integrated in a direction of a slow axis of said semiconductor laser, a semiconductor laser light focusing means for focusing laser light emitted out of said semiconductor laser with respect to a direction of a fast axis of said semiconductor laser, and a semiconductor laser light refracting means for refracting all rays or some rays of the laser light emitted out of said semiconductor laser with respect to the direction of the slow axis of said semiconductor laser, said semiconductor laser light emitting means being configured so that the slow axis of said semiconductor laser is parallel to the axis of said solid-state laser rod and emitting the laser light towards said diffusive reflection tube; and a semiconductor laser light guiding means disposed in said diffusive reflection tube, for guiding the laser light emitted out of said semiconductor laser light emitting means and incident thereon to an end portion thereof while substantially maintaining the length of one side of a cross section of the laser light emitted out of said semiconductor laser light emitting means, the side running in a direction parallel to the fast axis, and for guiding the laser light toward said solid-state laser rod located within said diffusive reflection tube.