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Plasma-Grating-Enabled Second Harmonic Generation

delete2026-02-24
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PRE
AI
S
Shing Yiu Fu
D
Daopeng Yuan
X
X.-C. Zhang *
DOI:10.34133/ultrafastscience.0131delete
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摘要

摘要

En 中文
我们报道了由空气等离子体受两束超快激光脉冲协同激发产生的二次谐波发射的实验特征,并提出一个理论模型描述所观测到的性质。双光束光学非线性过程被发现同时依赖于两束基频脉冲的光学偏振,且输出发射与两输入激光束的传播方向一致。这些超快现象的属性通过将等离子体光栅的作用纳入相互作用图景中而得到协调。当考虑激光诱导光栅的衍射特性时,每束基频光束均被衍射至另一束光束的方向。共线基频分量随后可产生满足相位匹配条件的二次谐波辐射。随后的理论模拟与实验观测结果吻合良好。最后,我们分析了空气等离子体的有效非线性极化率张量,以促进对强超快激光诱导等离子体中隐藏对称性的未来研究。
Keyword:
LASER-PULSES
IONIZATION
NITROGEN
AIR

期刊

U
Ultrafast Science
IF:
9.9
论文数:
36
被引数:
0

机构

U
University of Rochester
学者数:
2.6W
论文数: 2.1W
被引数: 2.2W
引用论文

引用论文

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