Open AccessLaguerre-Gaussian beam generation via enhanced intracavity spherical aberration
Author(s) -
Meng Wang,
Yuanyuan Ma,
Quan Sheng,
Xi He,
Junjie Liu,
Wei Shi,
Jianquan Yao,
Takashige Omatsu
Publication year - 2021
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.436110
Subject(s) - optics , spherical aberration , physics , lens (geology) , gaussian beam , laser , beam (structure) , focal length , laser beam quality , laser beams
We demonstrate an end-pumped Laguerre-Gaussian (LG) mode-selectable Nd:YVO 4 laser utilizing enhanced intracavity spherical aberration. The cavity was designed to exploit strong spherical aberration generated by an expanded beam, incident on a short-focal-length lens, which enabled oscillation of cavity modes of different order. This compact-cavity laser could operate efficiently with high-order LG mode, with the order of this mode being selectively changed by simply adjusting the distance between the short-focal-length lens and the output coupler. Scalar LG modes from LG 0,±10 to up to LG 0,±33 were observed in the experiment. The output power of the LG 0, ±33 mode was 1.87 W under an absorbed pump power of 6.6 W.