Jingtao XIN1,Zhehai ZHOU2,Xiaoping LOU2,Mingli DONG2,Lianqing ZHU1,2*
1. Beijing Engineering Research Center of Optoelectronic Information and Instruments, Beijing Information Science and Technology University, Beijing 100192, China
2. Beijing Key Laboratory for Optoelectronic Measurement Technology, Beijing Information Science and Technology University, Beijing 100192, China

Abstract

The propagation property of Laguerre-Gaussian (LG) beams passing through a diffractive ring-lens (RL) was studied, where the RL was generated by a liquid crystal spatial light modulator (LC-SLM). It was found that the LG beam was transformed into a sharp ring at the focal plane first, and then a Bessel-similar beam was formed behind the focal plane but the beam size was enlarged with the increase of propagation distance. With the help of a group of lenses, the beam was further collimated into a Bessel beam. Finally, the “non-diffractive” and self-reconstruction properties of the generated Bessel beams were experimentally verified.

Cite this article:   
Jingtao XIN,Zhehai ZHOU,Xiaoping LOU, et al. Transformation of Laguerre-Gaussian beam by a ring-lens[J]. Front. Optoelectron., 2017, 10(1): 9-13.