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Proceedings Paper

Optimizing the phase matching in high-order harmonics generation
Author(s): Chao Wang; Dong Eon Kim; Yi-fan Kang; Nilabha Bhattacharjee; Yong-lin Bai; Yi-shan Wang
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Paper Abstract

This paper presents an experimental method to realize the best high-order harmonics generation (HHG) phase matching in the interaction of strong optical field with gas target. By studying the effects of the relative location between gas target source and the Gaussian-shaped driving femtosecond laser field focus on the harmonics yield, conclusions are obtained that the optimum position of gas target for phase matching is always behind the of the focal point of the driving field, with much lower HHG yield before the focus caused by serious harmonics phase mismatch. Meanwhile, with optimum harmonics phase matching, the high-order harmonics field that resulted has the similar Gaussian-shaped spatial distribution characteristics with the driving field, verifying experimentally the commonly used assumptions for attosecond laser pulse based on HHG. This optimization method is also suitable both for other driving field with different spatial distribution of light intensity and other type of target source. The results here have important guiding significance for high harmonic generation and high harmonic isolated attosecond pulse technology.

Paper Details

Date Published: 24 October 2017
PDF: 5 pages
Proc. SPIE 10457, AOPC 2017: Laser Components, Systems, and Applications, 1045707 (24 October 2017); doi: 10.1117/12.2281986
Show Author Affiliations
Chao Wang, Xi’an Institute of Optics and Precision Mechanics (China)
Pohang Univ. of Science and Technology (Korea, Republic of)
Dong Eon Kim, Pohang Univ. of Science and Technology (Korea, Republic of)
Yi-fan Kang, Air Force Engineering Univ. (China)
Nilabha Bhattacharjee, Pohang Univ. of Science and Technology (Korea, Republic of)
Yong-lin Bai, Xi'an Institute of Optics and Precision Mechanics (China)
Yi-shan Wang, Xi'an Institute of Optics and Precision Mechanics (China)


Published in SPIE Proceedings Vol. 10457:
AOPC 2017: Laser Components, Systems, and Applications
Shibin Jiang; Lijun Wang; Lan Jiang; Long Zhang, Editor(s)

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