2026-10-10T19:08:08Z https://www.scidb.cn/oai

10.57760/sciencedb.06809 2022-12-07T10:47:49Z

2022-12-07 Optical vortex switch based on multiplexed volume gratings with high diffraction efficiency doi:10.57760/sciencedb.06809 en Systems of controllable orbital angular momentum (OAM) require more compact, higher conversion efficiency, more tolerable wavelength or polarization. We introduce an optical vortex switch based on a multiplexed volume grating (MVG). The MVG recorded in a piece of photo-thermo-refractive (PTR) glass exhibits high diffraction efficiency (DE, also known as conversion efficiency in transporting), sensitive angular selectivity, and polarization-insensitive. The effects of the incident divergence angle and polarization on the DE and the far-field diffraction profiles are demonstrated and investigated. It turns out that the divergence angle of the probe beam can greatly affect the DE. The fluctuation of the DE caused by polarization variation is less than 1.59%. This switch can be potentially applied in vortex tweezers, optical communication, and high power systems. Optical vortex switch; orbital angular momentum; multiplexed volume grating Jingyin Zhao Yunxia Jin Fanyu Kong Dongbing He Hongchao Cao Wang Hao Yubo Wu Jianda Shao PUBLIC https://creativecommons.org/publicdomain/zero/1.0/ dataset Science Data Bank