激光与光电子学进展, 2002, 39 (7): 36, 网络出版: 2006-08-08
利用时空变换获得超短激光脉冲
Ultra-short Pulse Generation by Spatial-temporal Transformation
摘要
由LD抽运Nd-YLF固体激光器输出的单纵模调Q激光脉冲,脉宽约为85ns,经过快速LiNbO3电光偏转器实现时空变换,用狭缝削取脉宽约为1ns的超短激光脉冲.导出激光束通过偏转器后扫描光线长度与加到偏转器上的快速电压脉冲变化率关系,并在实验中分别用MOS管和雪崩管高压电脉冲发生器取代价格昂贵的冷阴极管高压电脉冲发生器,获得激光脉冲宽度压缩约两个量级,且实现激光脉冲宽度可调.
Abstract
An ultra-short pulse (～1 ns in width) was obtained by passing a single longitudinal mode Q-switched laser pulse (～85 ns in width)from a LD-pumped Nd:YLF solid state laser through a fast LiNbO3 electro-optic deflector to realize spatial-temporal transform and choppingby a slit. The relationship of variation rate between the scan light beam length after passing through the deflector and the fast voltage pulse wasderived. The laser pulse width was compressed by two orders of magnitude and the laser pulse width adjustment was realized by replacing theexpensive cold cathode high voltage electric pulse generator with MOS tube and avalanche high voltage electric pulse generator.
参考文献
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曾文章, 陈绍和, 张生佳, 韦辉, 马忠林, 许世忠. 利用时空变换获得超短激光脉冲[J]. 激光与光电子学进展, 2002, 39(7): 36. 曾文章, 陈绍和, 张生佳, 韦辉, 马忠林, 许世忠. Ultra-short Pulse Generation by Spatial-temporal Transformation[J]. Laser & Optoelectronics Progress, 2002, 39(7): 36.
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