Opt Lett. 2014 Feb 15;39(4):747-50. doi: 10.1364/OL.39.000747.
Generation of a high spectral power supercontinuum (SC) is reported from controlled multifilamentation of femtosecond pulses in fused silica. The use of a microlens array allows the manipulation of the filamentation pattern under very high-incident laser pulse energy without sample damage and, consequently, compared with using a single focusing lens, higher power of SC generation with a similar spectral broadening can be obtained. Moreover, the role of the interplay between diffraction pattern and proximity to the focus of the microlens array in SC generation is discussed.
我们在熔融石英中通过控制飞秒脉冲的多丝化实现了高光谱功率超连续谱（SC）的产生。使用微透镜阵列可以在不损坏样品的情况下对非常高的入射激光脉冲能量下的细丝化模式进行操纵，因此，与使用单个聚焦透镜相比，可以获得更高功率的 SC 产生，并具有相似的光谱展宽。此外，还讨论了微透镜阵列的衍射图案和接近焦点之间的相互作用在 SC 产生中的作用。
