Chinese Optics Letters, 2021, 19 (6): 060005, Published Online: Apr. 1, 2021
Directly generating vortex beams in the second harmonic by a spirally structured fundamental wave Download: 1044次
Abstract
Based on nonlinear wave mixing, we experimentally propose a scheme for directly generating optical orbital angular momentum (OAM) by a spirally structured fundamental wave interacting with a nonlinear medium, in which the nonlinear susceptibilities are homogenous. In the experiment, the second-harmonic generation of a fundamental wave carrying positive (negative) integers and fractional OAM states was investigated. This study presents a convenient approach for dynamic control of OAM of vortex beams, which may feature their applications in optical manipulation and optical communication.
Jun Li, Haigang Liu, Yan Li, Xianping Wang, Minghuang Sang, Xianfeng Chen. Directly generating vortex beams in the second harmonic by a spirally structured fundamental wave[J]. Chinese Optics Letters, 2021, 19(6): 060005.