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arXiv 1702.05348physics.optics
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多线CO laser聚焦对ZnGeP2宽带和频产生的影响

Influence of multi-line CO laser focusing on broadband sum-frequency generation in ZnGeP2

A. A. Ionin, I. O. Kinyaevskiy, Yu. M. Klimachev, A. A. Kotkov, L. V. Seleznev

摘要:

通过实验和数值模拟研究了多线CO激光聚焦对ZnGeP2非线性晶体宽带和频产生光谱特性的影响。实验上观察到多谱线CO激光器的最大频率转换,而不是单线CO激光器的紧聚焦。紧密聚焦导致加宽和频产生频谱并增加总的(即在频谱上积分的)频率转换效率。这些影响是由于增加相位匹配带宽和角色散。数值计算表明,多谱线CO激光器的最大转换效率发生在0.4倍于单线的焦距处。

英文摘要:

An influence of multi-line CO laser focusing on spectral characteristics of broadband sum-frequency generation in ZnGeP2 nonlinear crystal was experimentally and numerically studied. Maximal frequency conversion was experimentally observed under tight focusing of the multi-line rather than single-line CO laser. The tight focusing resulted in broadening sum-frequency generation spectrum and increasing total, i.e. integrated over the spectrum, frequency conversion efficiency. These effects were due to increasing phase-matching bandwidth and angular dispersion. Maximal conversion efficiency of the multi-line CO laser was numerically demonstrated to take place at the focal length of 0.4 times that for the single-line one.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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