飞秒激光辐射诱导晶体的非线性磁化率

Luminescence and Laser Physics: XVII International Conference on Luminescence and Laser Physics – LLPh 2019 Pub Date : 2021-07-27 DOI:10.1063/5.0062977

V. Baryshnikov, O. Goreva

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引用次数: 0

摘要

直径为10µm的飞秒激光脉冲在非线性晶体高斯腰前和高斯腰附近的带电子和空穴的多光子电离浓度对应于1018 ~ 1021 cm−3。这种水平的诱导电子-空穴极化分量对提高飞秒辐射与非线性晶体相互作用的谐波产生效率有额外的贡献。

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Nonlinear susceptibility in crystals induced by femtosecond laser radiation

Concentration of band electrons and holes induced by multiphoton ionization in the filament of a femtosecond laser pulse with a diameter of 10 µm before and near the Gaussian waist in nonlinear crystals corresponds to 1018 − 1021 cm−3. Such level of the induced electron-hole polarization component makes an additional contribution to increasing the harmonic generation efficiency in the interaction of femtosecond radiation with nonlinear crystals.

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来源期刊

Luminescence and Laser Physics: XVII International Conference on Luminescence and Laser Physics – LLPh 2019

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