High-power THz wave generation in plasma induced by polarization adjusted two-color laser pulses
High-power THz wave generation in plasma induced by polarization adjusted two-color laser pulses
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DOI：
10.1063/1.4789773
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发表时间：
2013-01
影响因子：
4
通讯作者：
Y. Minami;T. Kurihara;K. Yamaguchi;M. Nakajima;T. Suemoto
中科院分区：
文献类型：
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作者：
Y. Minami;T. Kurihara;K. Yamaguchi;M. Nakajima;T. Suemoto
介绍了一种通过在非线性光学晶体和等离子体之间插入特殊设计的双波长波片来增强双色激光脉冲产生的空气等离子体中太赫兹场的简单而有效的方法。调节两个激光脉冲的偏振，得到了1.4 mV/cm的电场，是未修饰系统的1.7倍。此外，考虑了双色激光脉冲群速度的色散，讨论了增强因子的有效性。
We introduce a simple and efficient method of enhancing the terahertz field in an air plasma produced by two-color laser pulses, by inserting a specially designed dual-wavelength wave plate between the non-linear optical crystal and the plasma. Adjusting the polarization of the two laser pulses yielded an electric field of 1.4 MV/cm, which was 1.7 times as intense as that obtained from the unmodified system. Additionally, taking a dispersion of the group velocities of the two-color laser pulses into account, we discussed the validity of the enhancement factor.