24 December 2015 Fraunhofer diffraction of Laguerre–Gaussian beam caused by a dynamic superposed dual-triangular aperture
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Abstract
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.
© 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)
Xinzhong Li, Yuping Tai, Zhaogang Nie, Hui Wang, Hehe Li, Jingge Wang, Jie Tang, Yishan Wang, "Fraunhofer diffraction of Laguerre–Gaussian beam caused by a dynamic superposed dual-triangular aperture," Optical Engineering 54(12), 123113 (24 December 2015). https://doi.org/10.1117/1.OE.54.12.123113 . Submission:
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