Opt Lett. 2013 Oct 1;38(19):3758-61. doi: 10.1364/OL.38.003758.
We generated a broad spectrum of light between 1064 and 1300 nm in the infrared by cascading stimulated Raman scattering in a potassium titanyl phosphate crystal while broadband conversion of the infrared Raman cascade was simultaneously achieved in the visible through second-harmonic generation (SHG) and sum-frequency mixing. We observed that odd- and even-order cascaded Stokes components were spatially addressed at different angles of propagation in the crystal. The efficiency of SHG and sum-frequency mixing is discussed as a function of the pump polarization. We also report on significant spatial distortions of the output Stokes beams.
我们在磷酸钛氧钾晶体中通过级联受激拉曼散射产生了 1064 到 1300nm 之间的宽谱红外光，同时通过二次谐波产生 (SHG) 和和频混合在可见光中实现了宽带红外拉曼级联的转换。我们观察到，奇数阶和偶数阶级联斯托克斯分量在晶体中的不同传播角度被空间寻址。讨论了 SHG 和和频混合的效率作为泵浦偏振的函数。我们还报告了输出斯托克斯光束的显著空间变形。
