Photonics Research, 2021, 9 (2): 02000266, Published Online: Feb. 2, 2021
Vortex random fiber laser with controllable orbital angular momentum mode Download: 622次
Abstract
In this paper, we propose and experimentally demonstrate a vortex random fiber laser (RFL) with a controllable orbital angular momentum (OAM) mode. The topological charge of the vortex RFL can range from with nearly watt-level output power. A triangular toroidal interferometer is constructed to verify the spiral phase structure of the generated vortex random laser with a special coherence property. Vortex RFLs with fractional topological charge are also performed in this work. As the first demonstration of a vortex RFL with a controllable OAM mode (to the best of our knowledge), this work may not only offer a valuable reference on temporal modulation of a vortex beam and optical field control of an RFL but also provide a potential vortex laser source for applications in imaging, sensing, and communication.
Xiaoya Ma, Jun Ye, Yang Zhang, Jiangming Xu, Jian Wu, Tianfu Yao, Jinyong Leng, Pu Zhou. Vortex random fiber laser with controllable orbital angular momentum mode[J]. Photonics Research, 2021, 9(2): 02000266.