Influence of chirp pulse parameters on far-field intensity distribution of combined beams

Zhao Yahui; Chen Mei; Zhang Rongzhu

doi:10.3788/HPLPB201426.011012

Volume 26 Issue 01

Jan. 2014

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Article Navigation > High Power Laser and Particle Beams > 2014 > 26(01): 011012

Zheng Zheng, Wu Hongchun, Cao LiangZhi, et al. Application of Monte Carlo and discrete ordinate coupling method to pressurized water reactor cavity radiation streaming calculation[J]. High Power Laser and Particle Beams, 2012, 24: 2946-2950. doi: 10.3788/HPLPB20122412.2946

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Zhao Yahui, Chen Mei, Zhang Rongzhu. Influence of chirp pulse parameters on far-field intensity distribution of combined beams[J]. High Power Laser and Particle Beams, 2014, 26: 011012. doi: 10.3788/HPLPB201426.011012

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Influence of chirp pulse parameters on far-field intensity distribution of combined beams

doi: 10.3788/HPLPB201426.011012

1.
College of Electronics and Information Engineering,Sichuan University,Chengdu 610064,China

Received Date: 2013-05-27
Rev Recd Date: 2013-08-19
Publish Date: 2014-01-15

Abstract

Abstract

The beam combination is an effective method to improve laser power and beam quality, the parameters of chirped pulsed Gaussian beam will affect the result. Based on the Fraunhofer diffraction integral formula, the formulas for the far-field relative intensity of two chirped pulsed Gaussian beams combination are derived. It is shown that the far-field relative intensity distribution of the combined beams depends on the chirp parameter, pulse duration, and spectral bandwidth. The numerical simulation result of the intensity indicates that, the far-field relative intensity distribution of combined beams increases and is more concentrated in the vicinity of transmission shaft with the increment of chirp parameter or with the decrement of pulse duration difference or the increment of spectral bandwidth difference.
- chirped pulse,
- beam combination,
- far-field relative intensity,
- chirp parameter,
- pulse duration,
- spectral bandwidth

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