| 摘要 |
PURPOSE:To uniformize the temperature distribution inside a solid laser element and improve the laser performance, by providing excited light diffusing members for uniformly applying excitation light to the cooling surfaces of a solid laser element. CONSTITUTION:Excitation light rays radiated from excitation light radiation lamps 4, 4 are applied to diffusing plates 5, 5 directly or after they are reflected by excitation light reflecting parts 6, 6, as shown by the one-dot chain line. When passing through the diffusing plates 5, 5, the excitation light is diffused so as to be uniformly applied to excitation cooling surfaces 3, 3 of a solid laser element 2. Accordingly, the excitation light radiated from the lamps 4, 4 can be uniformly applied to the whole of the excitation cooling surfaces 3, 3 of the solid laser element 2. It is therefore possible to uniformize the temperature distribution inside the laser element 2. Thus, it is possible to prevent saturation of the laser beam output due to self-focusing or self-double refraction. |
