QUANTUM WAVE-PACKET EXPLORATION OF ISOLATED ULTRA-SHORT ATTOSECOND PULSE GENERATION BY A MODIFIED THREE-COLOR LASER FIELD SCHEME

被引：1
作者：
Wang, Yunhui [1 ]
Wu, Haiping [1 ]
Yu, Chao [1 ]
Shi, Qi [1 ]
Deng, Kaiming [1 ]
Lu, Ruifeng [1 ]
机构：
[1] Nanjing Univ Sci & Technol, Dept Appl Phys, Nanjing 210094, Jiangsu, Peoples R China
来源：
JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY | 2013年 / 12卷 / 01期
关键词：
Quantum dynamics; high-order harmonic; three-color field; isolated attosecond pulse; HIGH-HARMONIC GENERATION; MULTICYCLE LASERS; IONIZATION; DYNAMICS; INTENSE; PROPOSAL; REGIME;
D O I：
10.1142/S0219633612500988
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
By numerically solving the three dimensional time-dependent Schrodinger equation, we explore the high-order harmonic and attosecond pulse generation of He atoms exposed to a special three-color field. An ultrabroad supercontinuum with a bandwidth of 887 eV has been attained, supporting an isolated 4 as pulse straightforwardly by Fourier transforming. Utilizing available intense infrared femtosecond laser resource within the nonrelativistic regime, the produced laser pulse is near to zeptosecond region. Remarkably, the harmonic conversion efficiency is enhanced in terms of the double-plateau structure of the harmonic spectra, yielding high-intensity attosecond pulses with alternative plateau.
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页数：8
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