| 摘要 |
PURPOSE:To achieve that a laser medium for a solid-state laser device absorbs excitation light effectively, to prevent an output from becoming unstable due to a thermal lens phenomenon and to stabilize a laser output. CONSTITUTION:A filter layer 10 which reflects only a wavelength in an absorption band for a laser medium 4 out of light radiated by a light source 3 is formed on the surface of a reflection face 2 in a cavity 1. Thereby, only a wavelength region which is easily absorbed by the laser medium out of light radiated from the light source 3 is reflected, and the output of a solid-state laser device is stabilized. |
