532 nm Nd:YAG激光的高效多波长受激喇曼转化

 Nd:YAG二倍频激光(532 nm)泵浦H2中的受激喇曼散射产生多级斯托克斯。其中一级、二级和三级斯托克斯的最高量子转换效率分别可达66%，60%和19%。在0.44 MPa下，可同时获得1 579 nm(19%)，954 nm(30%)，683 nm(33%)，532 nm(14%)，436 nm(3.7%)和368 nm(1.4%)的多波长输出。H2压力对多级斯托克斯转换有显著影响：高气压有利于产生高效的一级斯托克斯，而低气压则适合于高级斯托克斯和反斯托克斯的产生。

Efficient multi-wavelength Raman conversion of Nd:YAG laser at 532 nm

Multi-order Stokes is generated in H_2 pumped by a pulsed Nd:YAG laser at 532 nm.Maximum energy conversion efficiencies as high as 66%,60% and 19% are attained for the first,second and third Stokes respectively.Under 0.44 MPa H_2,significant multi-wavelength outputs can be obtained simultaneously with quantum distribution of 19% at 1 579 nm,30% at 954 nm,33% at 683 nm,14% at 532 nm,3.7% at 436 nm,and 1.4% at 368 nm.High-pressure H_2 is found to be the best for highly efficient first Stokes conversion,while low-pressure H_2 is proved suitable for higher order Stokes and antiStokes generation.