Single attosecond pulse generation from multicycle nonlinear chirped pulses

被引：18
|
作者：
Niu, Yueping [1 ,2 ]
Xiang, Yang [1 ]
Qi, Yihong [1 ]
Gong, Shangqing [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China
[2] Henan Polytech Univ, Coll Comp Sci & Technol, Jiaozuo 454000, Peoples R China
来源：
PHYSICAL REVIEW A | 2009年 / 80卷 / 06期
关键词：
HARMONIC-GENERATION; INTENSITY; FIELD;
D O I：
10.1103/PhysRevA.80.063818
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present a method of producing single attosecond pulses by high-order harmonic generation with multicycle nonlinear chirped driver laser pulses. The symmetry of the laser field in several optical cycles near the pulse center is broken, and then the photons near the cutoff burst only in half optical cycle. By selecting out the harmonics near the cutoff, an isolated attosecond pulse could be obtained. The results are almost independent of the length and chirp form of the driver laser pulse.
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页数：4
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