Highly efficient frequency tripling of laser radiation in a low-temperature laser-produced gaseous plasma
Highly efficient frequency tripling of laser radiation in a low-temperature laser-produced gaseous plasma
复制标题
低温激光产生的气态等离子体中激光辐射的高效三倍频率
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
A. Zheltikov
中科院分区：
文献类型：
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作者：
A. Fedotov;S. Gladkov;N. Koroteev;A. Zheltikov
报道了在相干(即共线)几何结构下，在低密度激光等离子体中产生波长为λ=1.06μm的微微秒激光脉冲的相对有效的(高达3%)三次谐波。产生的三次谐波光束接近衍射极限和相干，可用于其他非线性光学实验。为了解释这一结果，提出了一个简单的理论模型。在该模型中，三次谐波的产生被认为是在强激光场存在的情况下电子被离子散射而产生的过程。
Relatively efficient (up to 3%) third-harmonic generation of picosecond Nd:YAG laser pulses for wavelength λ = 1.06 μm in a low-density laser plasma is reported for a coherent (i.e., collinear) geometry. The third-harmonic beam produced is nearly diffraction limited and coherent and can be used in other nonlinear-optical experiments. A simple theoretical model is proposed in order to explain this result. In the model, third-harmonic generation is considered to be a process that arises from the scattering of electrons by ions in the presence of the strong laser field.