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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 24 — Nov. 21, 2011
  • pp: 23857–23866

Optimization of three-color laser field for the generation of single ultrashort attosecond pulse

Peng-Cheng Li, I-Lin Liu, and Shih-I Chu  »View Author Affiliations


Optics Express, Vol. 19, Issue 24, pp. 23857-23866 (2011)
http://dx.doi.org/10.1364/OE.19.023857


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Abstract

We present an efficient and realizable scheme for the generation of an ultrashort single attosecond (as) pulse. The feasibility of such a scheme is demonstrated by solving accurately the time-dependent Schrödinger equation using the time-dependent generalized pseudospectral (TDGPS) method. This scheme involves the use of the optimization of the three-color laser fields. The optimized laser pulse is synthesized by three one-color laser pulses with proper relative phases. It can provide a longer acceleration time for the tunneling and oscillating electrons, and allows the electrons to gain more kinetic energy. We show that the plateau of high-order harmonic generation is extended dramatically and a broadband supercontinuum spectra is produced. As a result, an isolated 23 as pulse with a bandwidth of 163 eV can be obtained directly by superposing the supercontinuum harmonics near the cutoff region. We will show that such a metrology can be realized experimentally.

© 2011 OSA

OCIS Codes
(020.4180) Atomic and molecular physics : Multiphoton processes
(020.2649) Atomic and molecular physics : Strong field laser physics

ToC Category:
Atomic and Molecular Physics

History
Original Manuscript: August 15, 2011
Revised Manuscript: October 10, 2011
Manuscript Accepted: October 30, 2011
Published: November 9, 2011

Citation
Peng-Cheng Li, I-Lin Liu, and Shih-I Chu, "Optimization of three-color laser field for the generation of single ultrashort attosecond pulse," Opt. Express 19, 23857-23866 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-24-23857


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