Maker fringes in the Terahertz radiation produced by a 2-color laser field in air
Maker fringes in the Terahertz radiation produced by a 2-color laser field in air
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DOI：
10.1364/oe.17.011480
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发表时间：
2009-07-06
期刊：
影响因子：
3.8
通讯作者：
Mysyrowicz, A.
中科院分区：
文献类型：
--
作者：
Liu, Y.;Houard, A.;Mysyrowicz, A.
双色飞秒激光产生的太赫兹辐射随着驱动飞秒激光脉冲功率的增加而强烈饱和并产生振荡行为。这是解释的形成的等离子体通道，由于双折射。由于灯丝内的色散和古伊相移，800 nm和400 nm脉冲之间的相位差沿着该等离子体发射器变化。结果，产生的局部太赫兹辐射沿沿着灯丝相消或相长干涉，这表现在Maker条纹的形式本身。(c)2009年美国光学学会
The terahertz radiation produced by a 2-color femtosecond laser scheme strongly saturates and develops an oscillatory behavior with increasing power of the driving femtosecond laser pulses. This is explained by the formation of a plasma channel due to filamentation. Due to dispersion inside the filament and the Gouy phase shift, the phase difference between the 800 nm and 400 nm pulses varies along this plasma emitter. As a result, the local THz radiations generated along the filament interfere destructively or constructively, which manifests itself in the form of Maker fringes. (c) 2009 Optical Society of America