Open Access~1 mJ pulsed vortex laser at 1645 nm with well-defined helicity
Author(s) -
Yongguang Zhao,
Qiyao Liu,
Wei Zhou,
Deyuan Shen
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.015596
Subject(s) - optics , laser , vortex , materials science , optical vortex , helicity , ceramic , nonlinear optics , beam (structure) , physics , particle physics , thermodynamics , composite material
We report on a millijoule level Er:YAG ceramic pulsed vortex laser resonantly pumped by an annular beam at 1532 nm. By means of an uncoated YAG crystal plate inserting into the cavity and a proper thermal gradient on the ceramic, 1.03 mJ LG 0,-1 mode and 0.97 mJ LG 0, + 1 mode were respectively produced, and no vortex mode instability problem was observed. We believe the directly generated millijoule level optical vortex with well-defined helicity will have potential applications in material modification and processing, high-field laser physics, and nonlinear optics, etc.