Multicolor femto-second laser pulse generation device

多色飞秒激光产生装置

Abstract

A multicolor femto-second laser pulse generation device comprises a first aperture diaphragm, a plano-convex lens and a dichroic mirror in sequence in the forward direction of incident laser; the incident laser is divided into a transmitted beam and a reflected beam by the dichroic mirror, the reflected beam sequentially passes a long-pass filter plate, a chronotron, a second aperture diaphragm and a third high-parallelism reflection silver mirror to be incident on a nonlinear transparent solid medium; the transmitted beam sequentially passes a chirp mirror, a first high-parallelism reflection silver mirror and a second high-parallelism reflection silver mirror to be incident on a nonlinear transparent medium; a certain included angle is formed between the reflected beam and the transmitted beam incident on the nonlinear transparent medium; the chronotron is adjusted to enable the two beams to well coincide in time and space, so that a multicolor femto-second laser pulse can be generated. The device provided by the invention is simple in structure, can be applied to two-dimensional spectroscopy experiments, high-field laser experiments, coherence anti-Stokes Raman spectroscopy experiments and other different nonlinear laser spectroscopy research.
一种多色飞秒激光脉冲产生装置,沿入射激光的前进方向,依次是第一小孔光阑、平凸透镜和分色镜,入射激光经所述的分色镜分为透射光束和反射光束,沿反射光束方向依次经长通滤波片、延时器、第二小孔光阑和第三高平反射银镜,入射到非线性透明固体介质上,所述的透射光束依次经过啁啾镜、第一高平反射银镜和第二高平反射银镜,入射到所述的非线性透明介质上,入射到所述的非线性透明介质的所述的透射光束和反射光束具有一定夹角,调节所述的延时器,使得两光束在时间和空间很好的重合,从而产生多色飞秒激光脉冲。本发明装置结构简单,可以应用于二维光谱学实验、强场激光实验和相干反斯托克斯拉曼光谱学实验等不同的非线性激光光谱学研究。

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