Propagation properties of optical vortices in random speckle field based on Fresnel diffraction scheme

Li, Xinzhong; Tai, Yuping; Nie, Zhaogang; Zhang, Liping; Yin, Geng-Xin

doi:10.1016/j.optcom.2012.09.005

Cited by 6 publications

(2 citation statements)

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“…These results were found to be consistent with the results of the previous study on diffraction using the triangular aperture. 22 Figures 5 and 6 show the theoretical and experimental intensity distributions of the diffracted wave field when m ¼ 2, 3, and 4 in different aperture conditions of b ¼ 0; 0.3a, and 0.5a, respectively. We can see that the experimental results are in good agreement with the theoretical results.…”

Section: Resultsmentioning

confidence: 99%

“…1 Optical vortices are applied in different research fields such as quantum information communication, 2,3 microparticle manipulation, [4][5][6] light beam knots, 7,8 and image processing [9][10][11][12][13] among others. [14][15][16][17][18][19][20][21][22] An optical vortex has a spiral phase of expðimϕÞ and carries an orbital angular momentum (OAM) of mℏ, where m is the topological charge (TC).…”

Section: Introductionmentioning

confidence: 99%

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Fraunhofer diffraction of Laguerre–Gaussian beam caused by a dynamic superposed dual-triangular aperture

Tai

Nie

et al. 2015

Opt. Eng.

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We investigate the Fraunhofer diffraction of a Laguerre-Gaussian (LG) beam incident on a dynamic superposed dual-triangular aperture. The evolution of the diffraction pattern from this aperture is analyzed experimentally and theoretically. A special aperture, called the hex-star triangular aperture, demonstrates interesting diffraction patterns. Further, the diffraction properties of integer, half-integer, and fractional orders of topological charges at the Fraunhofer zone are studied by using the hex-star triangular aperture. This study can provide additional information to enhance the understanding of the diffraction properties of the LG beam transmitted through a complex aperture.

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Section: Resultsmentioning

confidence: 99%