Patent ID: 7233611
Filing Date: 2007-06-19
Classification: H01S

Abstract:
1. A diode-pumped solid-state laser device used to side-pump a laser rod, wherein: a cooling tube to cool said laser rod with the use of flowing water is provided coaxially so as to surround said laser rod; and said cooling tube is provided with an antireflection area for pumping light on a portion of an outer surface thereof, and with a high reflection area for the pumping light on another portion of the outer surface on which said antireflection area is absent wherein the antireflection area is not a hole through the cooling tube; wherein a pumping laser diode is placed in such a manner so as to prevent an optical axis of the, pumping light that passes through said antireflection area and goes incident on said laser rod from intersecting with a central axis of said laser rod; wherein said antireflection area is provided to a plurality of places along a circumferential direction of said outer surface; wherein said antireflection area comprises an antireflection coating; and said high reflection area comprises a high reflection coating; and wherein said high reflection coating is covered with said antireflection coating.