Theoretical exploration of laser-parameter effects on the generation of an isolated attosecond pulse from two-color high-order harmonic generation

Journal Article · Wed Dec 15 00:00:00 EST 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.063838· OSTI ID:21528998

Tianjiao, Shao ^[1]; Guangjiu, Zhao; Huan, Yang ^[1]; Bin, Wen ^[2]

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1. State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023 (China)
2. School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024 (China)

In the present work, laser-parameter effects on the isolated attosecond pulse generation from two-color high-order harmonic generation (HHG) process are theoretically investigated by use of a wave-packet dynamics method. A 6-fs, 800-nm, 6x10{sup 14}W/cm{sup 2}, linearly polarized laser pulse serves as the fundamental driving pulse and parallel linearly polarized control pulses at 400 nm (second harmonic) and 1600 nm (half harmonic) are superimposed to create a two-color field. Of the two techniques, we demonstrate that using a half-harmonic control pulse with a large relative strength and zero phase shift relative to the fundamental pulse is a more promising way to generate the shortest attosecond pulses. As a consequence, an isolated 12-as pulse is obtained by Fourier transforming an ultrabroad xuv continuum of 300 eV in the HHG spectrum under half-harmonic control scheme when the relative strength {radical}(R)=0.6 and relative phase =0.

• OSTI ID: 21528998
• Journal Information: Physical Review. A, Vol. 82, Issue 6; Other Information: DOI: 10.1103/PhysRevA.82.063838; (c) 2010 American Institute of Physics; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COLOR
EV RANGE
EXTREME ULTRAVIOLET RADIATION
FOURIER TRANSFORMATION
HARMONIC GENERATION
LASER RADIATION
PHASE SHIFT
PULSES
SPECTRA
THEORETICAL DATA
WAVE PACKETS
DATA
ELECTROMAGNETIC RADIATION
ENERGY RANGE
FREQUENCY MIXING
INFORMATION
INTEGRAL TRANSFORMATIONS
NUMERICAL DATA
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
TRANSFORMATIONS
ULTRAVIOLET RADIATION