Frequency modulation of high-order harmonic fields with synthesis of two-color laser fields

被引：3
|
作者：
Eilanlou, A. Amani [1 ,2 ]
Nabekawa, Yasuo [1 ]
Ishikawa, Kenichi L. [2 ,3 ]
Takahashi, Hiroyuki [2 ]
Takahashi, Eiji J. [1 ]
Midorikawa, Katsumi [1 ]
机构：
[1] RIKEN, Adv Sci Inst, Wako, Saitama 3510198, Japan
[2] Univ Tokyo, Grad Sch Engn, Dept Nucl Engn & Management, Bunkyo Ku, Tokyo 1138656, Japan
[3] Univ Tokyo, Grad Sch Engn, Photon Sci Ctr, Bunkyo Ku, Tokyo 1138656, Japan
来源：
OPTICS EXPRESS | 2010年 / 18卷 / 24期
关键词：
GENERATION; PULSES;
D O I：
10.1364/OE.18.024619
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report periodical frequency modulation of high-order harmonic fields observed by changing the delay between the driving two-color laser fields consisting of the fundamental and its second harmonic (SH) field. The amplitude of modulation has been up to similar to 0.4 eV, which is larger than the bandwidth of the fundamental field. Experimental results show that the intensity and chirp of the fundamental field can control this phenomenon. Numerical analysis by solving the time-dependent Schrodinger equation approves of these results and shows that anharmonic frequency components of the SH field have a crucial role in this phenomenon. (c) 2010 Optical Society of America
引用
收藏
页码：24619 / 24631
页数：13
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