Modulation of defect on Kerr medium for the intensity properties of Gaussian-Schell-model beam

Chen Xueqiong; Pu Jixiong

doi:10.3788/HPLPB201426.011016

Volume 26 Issue 01

Jan. 2014

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Article Navigation > High Power Laser and Particle Beams > 2014 > 26(01): 011016

Zhang Ying, Pang Beibei, Xi Zhiguo, et al. Design of a in-situ stress loading system used for residual stress neutron diffractometer[J]. High Power Laser and Particle Beams, 2013, 25: 2865-2868. doi: 10.3788/HPLPB20132511.2865

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Chen Xueqiong, Pu Jixiong. Modulation of defect on Kerr medium for the intensity properties of Gaussian-Schell-model beam[J]. High Power Laser and Particle Beams, 2014, 26: 011016. doi: 10.3788/HPLPB201426.011016

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Modulation of defect on Kerr medium for the intensity properties of Gaussian-Schell-model beam

doi: 10.3788/HPLPB201426.011016

Chen Xueqiong,
Pu Jixiong^,

1.
Fujian Provincial Key Laboratory of Light Propagation and Transformation,College of Information Science and Engineering,Huaqiao University,Xiamen 361021,China

Funds: null

Received Date: 2013-06-07
Rev Recd Date: 2013-08-28
Publish Date: 2014-01-15

Abstract

Abstract

Using Huygens-Fresnel diffraction integral formula, the expression for the cross-spectral density of the Gaussian-Schell model (GSM) beam which is modulated by the defect of the nonlinear Kerr medium surface is derived. The intensity distribution of GSM beam through the thin Kerr medium is studied. Numerical simulation shows that defect leads to the emergence of extreme intensity point near the rear of the nonlinear medium, which is more far away from the medium when the size of defect is increased. The partially coherent beam can also converge or diverge after passing through the medium with positive or negative nonlinear refractive index. A longer spatial coherence length, and a greater additional phase shift in the medium or a bigger size of defect, will lead to a more serious modulation for the light intensity.
- partially coherent beam,
- defect,
- Fresnel diffraction,
- intensity distribution

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