Theoretical exploration of control factors for the high-order harmonic generation (HHG) spectrum in two-color field.
In this work, the laser-parameter effects on the high-order harmonic generation (HHG) spectrum and attosecond trains by mixing two-color laser field, a visible light field of 800 nm and a mid-infrared (mid-IR) laser pulses of 2400 nm, are theoretically demonstrated for the first time. Different schemes are applied to discuss the function of intensity, carrier-envelope phase (CEP) and pulse duration on the generation of an isolated attosecond pulse. As a consequence, an isolated 16as pulse is obtained by Fourier transforming an ultrabroad XUV continuum of 208 eV with the fundamental field of duration of 6 fs, 9×10(14)W/cm2 of intensity, the duration of 12 fs, the CEPs of the two driving pulses of -π and the relative strength ratio √R=0.2.
Institute of Computational Physics, Department of Physics, Dalian Maritime University, Dalian 116026, PR China; Physics Laboratory, North China University of Water Resources and Electric Power, Zhengzhou 450011, PR China.
Xinting
X
Huang
Institute of Computational Physics, Department of Physics, Dalian Maritime University, Dalian 116026, PR China; Physics Laboratory, North China University of Water Resources and Electric Power, Zhengzhou 450011, PR China.
Dapeng
D
Yang
Institute of Computational Physics, Department of Physics, Dalian Maritime University, Dalian 116026, PR China; Physics Laboratory, North China University of Water Resources and Electric Power, Zhengzhou 450011, PR China. Electronic address: yaoli_dlmu@126.com.
Li
L
Yao
D003116:Color; D003198:Computer Simulation; D004583:Electrons; D005583:Fourier Analysis; D005740:Gases; D007700:Kinetics; D007834:Lasers; D008027:Light; D008962:Models, Theoretical; D009038:Motion; D012542:Scattering, Radiation; D013055:Spectrophotometry, Infrared / Q000295:instrumentation / Q000379:methods*; D013997:Time Factors
D005740:Gases
Attosecond; Carrier-envelope phase; High-order harmonic generation; Time-dependent wave packet