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Solid-state blue laser device capable of producing a blue laser beam having high power
Solid-state blue laser device capable of producing a blue laser beam having high power
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机译:能够产生具有高功率的蓝色激光束的固态蓝色激光装置
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摘要
In a solid-state blue laser device for producing a blue laser beam having a waveband of blue spectral range that is represented by a specific wavelength of, for example, 0.45 &mgr;m, the solid-state blue laser device comprises a semiconductor laser device for producing an excitation laser beam having an excitation wavelength of, for example, 0. 8 &mgr;m. Excited by the excitation laser beam, a self-frequency doubling crystal, such as Nd.sub.x Y.sub.1-x Al.sub.3 (BO.sub.3).sub.4 where x has a value selected between 0.005 and 0.04, both exclusive, produces a harmonic laser beam having a wavelength of a second harmonic thereof that is equal to the specific wavelength. The solid-state blue laser device thereby produces the harmonic laser beam as the blue laser beam. The solid-state blue laser device may further comprise a condensing lens for condensing, as a condensed laser beam, the excitation laser beam onto the self-frequency doubling crystal. In order to cool the self-frequency doubling crystal, a cooler may be mounted on the self-frequency doubling crystal. An outer mirror may be disposed adjacent to the self-frequency doubling crystal to produce the harmonic laser beam as the blue laser beam. A Q-switching element may be disposed between the self-frequency doubling crystal and the outer mirror. The self-frequency doubling crystal may be directly coupled to the semiconductor laser device to produce the blue laser beam having a single longitudinal mode of TEM.sub. 00.
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机译:在用于产生具有由例如0.45μm的特定波长表示的蓝色光谱范围的波段的蓝色激光束的固态蓝色激光装置中,固态蓝色激光装置包括半导体激光装置。用于产生激发波长为例如0.8μm的激发激光束。受激发激光束激发的自倍频晶体,例如Ndx x Y 1-x Al 3(BO 3)4,其中x具有选定的值分别为0.005和0.04之间的一个,产生一个谐波激光束,该激光束的二次谐波的波长等于特定波长。固态蓝色激光装置从而产生谐波激光束作为蓝色激光束。固态蓝色激光装置还可包括聚光透镜,用于将激发激光束作为聚束激光束聚束到自倍频晶体上。为了冷却自倍频晶体,可以在自倍频晶体上安装冷却器。可以在与自倍频晶体相邻的位置设置外镜,以产生作为蓝色激光束的谐波激光束。可以在自倍频晶体和外镜之间设置一个Q开关元件。自倍频晶体可以直接耦合到半导体激光器装置,以产生具有单个TEM纵向模式的蓝色激光束。 00
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