Open AccessHigh power, diffraction limited picosecond oscillator based on Nd:GdVO_4 bulk crystal with σ polarized in-band pumping
Author(s) -
Hua Lin,
Jie Guo,
Peng Gao,
Hai Yu,
Xiaoyan Liang
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.24.013957
Subject(s) - optics , picosecond , materials science , pulse duration , diffraction , laser , beam (structure) , crystal (programming language) , pulse (music) , laser beam quality , optoelectronics , physics , laser beams , detector , computer science , programming language
We report on a high power passively mode-locked picosecond oscillator based on Nd:GdVO 4 crystal with σ polarized in-band pumping. Thermal gradient and thermal aberration was greatly decreased with proposed configuration. Maximum output power of 37 W at 81 MHz repetition rate with 19.3 ps pulse duration was achieved directly from Nd:GdVO 4 oscillator, corresponding to 51% optical efficiency. The oscillator maintained diffraction limited beam quality of M 2 < 1.05 at different output coupling with pulse duration between 11.2 ps to 19.3 ps.