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Proceedings Paper

Spectral property of ultrashort chirped pulsed Gaussian beams diffracted by Gaussian aperture in dispersive media
Author(s): Qihui Zou; Qianhuan Hu; Jie Guo; Xi Duan; Shihong Tong
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Paper Abstract

Based on the Fresnel-Kirchhoff diffraction integral and Fourier transform, the propagation equation and its Fourier spectrum for ultra-short chirped pulsed Gaussian beams diffracted by Gaussian aperture are derived in dispersive medium, and the frequency-domain analytical electric field are presented. The effects of relative aperture, transmission distance and chirp parameter on the axial spectral properties are illustrated with numerical calculation results, and the variations of off-axis power spectrum with relative aperture, transmission distance and off-axis radius are given. It is found that the axial power spectrum of ultra-short chirped pulsed Gaussian increases with increasing relative aperture, the axial spectral blue-shift increases and approaches an asymptotic value associated with chirp parameter and propagation distance. The axial spectra of ultra-short chirped pulsed Gaussian become broadened with increasing the absolute value of the chirp parameter. With increasing off-axis radius, the off-axis power spectrum reduce rapidly, and the distribution of spectra shifts to the left. The off-axis spectral redshift increases with increasing off-axis radius.

Paper Details

Date Published: 21 October 2015
PDF: 10 pages
Proc. SPIE 9671, AOPC 2015: Advances in Laser Technology and Applications, 96712C (21 October 2015); doi: 10.1117/12.2205438
Show Author Affiliations
Qihui Zou, Southwest Petroleum Univ. (China)
Qianhuan Hu, Southwest Petroleum Univ. (China)
Jie Guo, Southwest Petroleum Univ. (China)
Xi Duan, Southwest Petroleum Univ. (China)
Shihong Tong, Southwest Petroleum Univ. (China)


Published in SPIE Proceedings Vol. 9671:
AOPC 2015: Advances in Laser Technology and Applications
Shibin Jiang; Lijun Wang; Chun Tang; Yong Cheng, Editor(s)

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