| 摘要 |
PROBLEM TO BE SOLVED: To prevent the oscillation wavelength of a semiconductor laser from shifting from the wavelength at which absorption of laser beams by a solid-state laser crystal becomes maximum so as to efficiently stimulate the solid-state laser crystal to enable it to stably output laser rays. SOLUTION: A semiconductor laser stimulating solid-state laser is equipped with a semiconductor laser 11 which emits a laser beam 10 as a stimulating light, condenser lenses 12a and 12b which condense the laser beam 10 of scattered light, a YLF crystal 13 serving as a solidstate laser medium doped with neodymium,λ/4 plates 15 and 16 arranged on a side opposite to the side of the semiconductor laser 11 or a twist mode. The resonator of the semiconductor laser 11 as a heating element is set as long in length as 0.8 mm or above, so that the contact surface of the semiconductor laser 11 with a heat releasing member such as a heat sink can be increased in area, and the semiconductor laser 11 can be improved in heat releasing properties. Therefore, the oscillation wavelength of the semiconductor laser 11 can be improved in drive current- dependent properties. |
