Cheng Yu-Chen, Lu Chih-Hsuan, Lin Yuan-Yao, Kung A H
Opt Express. 2016 Apr 4;24(7):7224-31. doi: 10.1364/OE.24.007224.
We analyze femtosecond supercontinuum generation in a distribution of thin solid plates to show that the distributed scheme inhibits processes leading to pulse breakup while allowing spectral expansion to proceed as desired. We introduce basic criteria for setting the plate thickness or initial laser intensity and the location of each plate in the laser beam path and confirm that under these conditions a fully-coherent and intense supercontinuum can be generated for input peak power of as much as two thousand times the critical power for self-focusing of the solid medium.
我们分析了薄固体平板分布中飞秒超连续谱的产生，结果表明这种分布方案能抑制导致脉冲分裂的过程，同时允许光谱按预期扩展。我们引入了设置平板厚度或初始激光强度以及每块平板在激光束路径中位置的基本准则，并证实在此条件下，对于高达固体介质自聚焦临界功率两千倍的输入峰值功率，能够产生完全相干且高强度的超连续谱。
