Far-field diffraction patterns formation of gaussian beam transmitted through thin nonlinear medium

he kun-na; deng luo-gen

Volume 15 Issue 10

Oct. 2003

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Article Navigation > High Power Laser and Particle Beams > 2003 > 15(10): 0-

yi heng-yu, peng yong, hu xiao-yang, et al. Precise measurement system for reflectivity scanning of large aperture components[J]. High Power Laser and Particle Beams, 2005, 17.

Citation:

he kun-na, deng luo-gen. Far-field diffraction patterns formation of gaussian beam transmitted through thin nonlinear medium[J]. High Power Laser and Particle Beams, 2003, 15.

yi heng-yu, peng yong, hu xiao-yang, et al. Precise measurement system for reflectivity scanning of large aperture components[J]. High Power Laser and Particle Beams, 2005, 17.

Citation:

he kun-na, deng luo-gen. Far-field diffraction patterns formation of gaussian beam transmitted through thin nonlinear medium[J]. High Power Laser and Particle Beams, 2003, 15.

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Far-field diffraction patterns formation of gaussian beam transmitted through thin nonlinear medium

1.
Department of Applied Physics,Beijing Institute of Technology,Beijing 100081,China

Publish Date: 2003-10-15

Abstract

Abstract

Based on the FresnelKirchhoff diffraction theory, this paper calculated the intensity distribution of the farfield diffraction patterns when a divergent or a convergent gaussian beam transmitted through a thin nonlinear medium, and analyzed the effect of the different Kerr mediums and the different gaussian beams on the patterns formation. The simulation results show that, when a divergent gaussian beam transmits through a defocusing nonlinear medium or a convergent one through a focusing nonlinear medium the pattern in the far field is a series of thick, larger diffraction rings with a central dark spot, while when a divergent gaussian beam transmits through a focusing nonlinear medium or a convergent one through a defocusing nonlinear medium the pattern in the far field is a series o
- gaussian beam,
- additive phase shift,
- spatial self-phase modulation,
- diffractive pattern

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