High spectral power femtosecond supercontinuum source by use of microlens array.
High spectral power femtosecond supercontinuum source by use of microlens array.
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DOI：
10.1364/ol.39.000747
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发表时间：
2014-02
期刊：
影响因子：
3.6
通讯作者：
A. Camino;Z. Hao;X. Liu;Jingquan Lin
中科院分区：
文献类型：
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作者：
A. Camino;Z. Hao;X. Liu;Jingquan Lin
报道了飞秒脉冲在熔融石英中受控多光子衍射产生高光谱功率的超连续谱。微透镜阵列的使用允许在非常高的入射激光脉冲能量下操纵双折射图案而不损坏样品，因此，与使用单个聚焦透镜相比，可以获得具有类似光谱展宽的更高功率的SC产生。此外，衍射图案和接近SC生成的微透镜阵列的焦点之间的相互作用的作用进行了讨论。
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.