THz pulse generation from shaped femtosecond laser pulses interaction with gas-plasma

被引：13

作者：

Yang, Nan ^{[1
,2
]}

Du, Hai-Wei ^{[3
]}

机构：

[1] Shanghai Jiao Tong Univ, Minist Educ, Key Lab Laser Plasmas, Shanghai 200240, Peoples R China

[2] Shanghai Jiao Tong Univ, Dept Phys & Astron, Shanghai 200240, Peoples R China

[3] RIKEN, Terahertz Sensing & Imaging Team, Aoba Ku, Sendai, Miyagi 9800845, Japan

来源：

OPTICS EXPRESS | 2014年 / 22卷 / 21期

关键词：

TERAHERTZ WAVE GENERATION; OPTICAL PULSES; AIR; RECTIFICATION; EMISSION; LIGHT;

D O I：

10.1364/OE.22.025494

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Photocurrent and its THz pulse generation from shaped two-color femtosecond laser pulses interaction with gas-plasma are investigated numerically. An opaque filter is used to block some frequency components of the dispersed laser pulse to generate a new shaped pulse. Although the filter decreases the pump laser energy, this method can generate broad, tunable THz pulses. It is found that the width and the position of the filter affect the THz pulse directly because this method generates a different laser pulse shape. In addition, THz generation is also a periodic function of the second harmonic pulse phase. (C) 2014 Optical Society of America

引用

页码：25494 / 25499

页数：6

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