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首页> 外文会议>Advanced Lassers and Systems; Proceedings of SPIE-The International Society for Optical Engineering; vol.6731 >Features of femtosecond laser pulses interaction with laser nanoceramics
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Features of femtosecond laser pulses interaction with laser nanoceramics

机译：飞秒激光脉冲与激光纳米陶瓷相互作用的特征

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摘要

In this work we have performed the experimental researches of features for the generation of supercontinuum in laser materials with identical chemical composition: Yb:YAG crystal and Yb:YAG laser nanoceramics. Dependence of width of supercontinuum spectrum in 515-1100 nm spectral range on femtosecond radiation intensity was investigated. At laser intensity ～1.2·10~(14) W/cm~2 the short-wave wing of a spectrum for nanoceramics has greater intensity and more flat shape in comparison with crystal. Experiments were made at lens focusing of the Ti:Sapphire femtosecond laser system radiation with energy up to 0.5 mJ in explored sample that was inside of integrating optical sphere. Also we investigated the interaction of femtosecond laser pulses and the generation of supercontinuum in Nd: Y_2O_3 nanoceramics. The maximum value of laser intensity in experiments was restricted by optical breakdown on target output surface, i.e. was below threshold of ablation of sample substance.
机译：在这项工作中，我们进行了在化学成分相同的激光材料中产生超连续谱的特征的实验研究：Yb：YAG晶体和Yb：YAG激光纳米陶瓷。研究了在515-1100 nm光谱范围内超连续谱光谱宽度对飞秒辐射强度的依赖性。在激光强度〜1.2·10〜（14）W / cm〜2时，与晶体相比，纳米陶瓷光谱的短波翼具有更大的强度和更平坦的形状。在积分的光学球内部的被探查样品中，对能量高达0.5 mJ的Ti：Sapphire飞秒激光系统辐射的透镜聚焦进行了实验。我们还研究了飞秒激光脉冲与Nd：Y_2O_3纳米陶瓷中超连续谱的相互作用。实验中激光强度的最大值受到目标输出表面的光学击穿的限制，即低于样品物质的烧蚀阈值。

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