Fine interference fringes formed in high-order harmonic spectra generated by infrared driving laser pulses

Han Xu, Hui Xiong, Zhinan Zeng, Yuxi Fu, Jinping Yao, Ruxin Li, Ya Cheng, and Zhizhan Xu

Phys. Rev. A 78, 033841 – Published 30 September 2008

Abstract

We experimentally investigate the high-order harmonic generation in argon gas using a driving laser pulse at a center wavelength of $1240 nm$ . High-contrast fine interference fringes could be observed in the harmonic spectra near the propagation axis, which is attributed to the interference between long and short quantum paths. We also systematically examine the variation of the interference fringe pattern with increasing energy of the driving pulse and with different phase-matching conditions.

Received 29 June 2008

DOI:https://doi.org/10.1103/PhysRevA.78.033841

Authors & Affiliations

Han Xu¹, Hui Xiong¹, Zhinan Zeng¹, Yuxi Fu^1,2, Jinping Yao^1,2, Ruxin Li¹, Ya Cheng^1,*, and Zhizhan Xu^1,†

¹State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
²Graduate University of Chinese Academy of Sciences, Beijing 100049, China

^*ycheng-45277@hotmail.com
^†zzxu@mail.shcnc.ac.cn

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Issue

Vol. 78, Iss. 3 — September 2008

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