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Proceedings Paper

Beam-width spreading of vortex beams in free space
Author(s): Weiwei Wang; Jinhong Li; Meiling Duan
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Paper Abstract

Based on the extended Huygens-Fresnel principle and the definition of second-order moments of the Wigner distribution function, the analytical expression for the beam-width spreading of Gaussian Schell-model (GSM) vortex beams in free space are derived, and used to study the influence of beam parameters on the beam-width spreading of GSM vortex beams. With the increment of the propagation distance, the beam-width spreading of GSM vortex beams will increase; the bigger the topological charge, spatial correlation length, wavelength and waist width are, the smaller the beam-width spreading is.

Paper Details

Date Published: 10 January 2018
PDF: 6 pages
Proc. SPIE 10617, 2017 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing, 106170J (10 January 2018); doi: 10.1117/12.2293222
Show Author Affiliations
Weiwei Wang, Taiyuan Univ. of Science and Technology (China)
Jinhong Li, Taiyuan Univ. of Science and Technology (China)
Meiling Duan, North Univ. of China (China)


Published in SPIE Proceedings Vol. 10617:
2017 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing
Liquan Dong; Yi Dong; Jian Chen; Fabien Bretenaker, Editor(s)

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