【摘要】 利用Nd∶YAG激光器的三倍频输出 (35 5nm)在H2 中的受激拉曼散射 (SRS)获得波长在 2 0 4～ 86 7nm范围内的激光输出。当抽运能量为 70mJ时观察到四阶Stokes光和五阶Anti Stokes光 ,其中第一阶Stokes光 (416nm)输出能量为 2 8 7mJ,第二阶Stokes光 (5 0 3nm)输出能量为 16mJ,一阶Anti Stokes光 (30 9nm)输出能量为 3mJ。研究了H2 压力和各阶Stokes光能量的关系 ,同时观察到环行光斑和脉宽压缩现象。更多还原

【Abstract】 The Stimulated Raman Scattering (SRS) in H 2 pumped by the third harmonic of Nd∶YAG laser (355 nm) was investigated. The wavelength of pump laser has been shifted into 204～867 nm wavelength region. When the pump laser was operated at laser energy of 70 mJ, four orders of Stokes and five orders of anti-Stokes have been observed in this experiment. The corresponding output energy of the first order Stokes (416 nm), the second order Stokes (503 nm) and the first order anti-Stokes (309 nm) was 28.7 mJ, 16 mJ and 3 mJ, respectively. The relationships between the pressure of H 2 and energy of each Stokes were investigated. Moreover, the circle beam spot and phenomena of pulse-width compressed have been observed.更多还原