| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical amplifier which can protect an excitation light source even if a solid-state laser medium is broken. SOLUTION: The excited light beams emitted from the excitation light sources 32a, 32b are radiated to a solid-state laser medium 31 passing through optical guides 36a, 36b and windows 35a, 35b. With radiation of the excited light beam to the solid-state laser medium 31, the light beam of the predetermined wavelength is amplified in the solid-state laser medium 31. If the windows 35a, 35b are broken resulting in the flooding of the cooling water, the excitation light sources 32a, 32b accommodated in the light source accommodating portions 34a, 34b are never contaminated with the cooling water. COPYRIGHT: (C)2005,JPO&NCIPI |
