Coherent and incoherent combinations of radial array elliptical Gaussian beams beyond paraxial approximation

li changjin

Volume 22 Issue 12

Dec. 2010

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Article Navigation > High Power Laser and Particle Beams > 2010 > 22(12): 0-

zhang wei, wu jian-hong, li chao-ming. Effect of wavefront aberration of grating on pulse compression[J]. High Power Laser and Particle Beams, 2005, 17.

Citation:

li changjin, . Coherent and incoherent combinations of radial array elliptical Gaussian beams beyond paraxial approximation[J]. High Power Laser and Particle Beams, 2010, 22.

zhang wei, wu jian-hong, li chao-ming. Effect of wavefront aberration of grating on pulse compression[J]. High Power Laser and Particle Beams, 2005, 17.

Citation:

li changjin, . Coherent and incoherent combinations of radial array elliptical Gaussian beams beyond paraxial approximation[J]. High Power Laser and Particle Beams, 2010, 22.

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Coherent and incoherent combinations of radial array elliptical Gaussian beams beyond paraxial approximation

li changjin^1,2,

1.
School of Physics and Electronic Information Engineering,Neijiang Normal University,Neijiang 641112,China;
2.
Institute of Laser Physics and Chemistry,Sichuan University,Chengdu 610064,China

Publish Date: 2010-12-07

Abstract

Abstract

Starting from the Rayleigh-Sommerfeld diffraction integral, analytical expressions for the free-space propagation of radial array nonparaxial elliptical Gaussian beams in coherent and incoherent combinations are derived, and some special cases including the far-field distributions and paraxial expressions are given. It is shown that the intensity distribution of the resulting beam depends on the f-parameter, radial array radius, beam number, propagation distance and combination scheme. The far-field maximum intensity of the resulting beam with N beamlets in coherent and incoherent combinations is N2- and N-times of that of the single beamlet, respectively.
- nonparaxial elliptical gaussian beam,
- coherent combination,
- incoherent combination,
- radial laser array,
- far field

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