Frontiers of Optoelectronics, 2017, 10 (1): 9, 网络出版: 2017-05-09
Transformation of Laguerre-Gaussian beam by a ring-lens
>Transformation of Laguerre-Gaussian beam by a ring-lens
ring-lens (RL) ring-lens (RL) Bessel beam Bessel beam spatial light modulator (SLM) spatial light modulator (SLM)
摘要
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 selfreconstruction properties of the generated Bessel beams were experimentally verified.
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 selfreconstruction properties of the generated Bessel beams were experimentally verified.
Jingtao XIN, Zhehai ZHOU, Xiaoping LOU, Mingli DONG, Lianqing ZHU. Transformation of Laguerre-Gaussian beam by a ring-lens[J]. Frontiers of Optoelectronics, 2017, 10(1): 9. Jingtao XIN, Zhehai ZHOU, Xiaoping LOU, Mingli DONG, Lianqing ZHU. >Transformation of Laguerre-Gaussian beam by a ring-lens[J]. Frontiers of Optoelectronics, 2017, 10(1): 9.