Open AccessBilayer platinum diselenide saturable absorber for 20 μm passively Q-switched bulk lasers
Author(s) -
Bingzheng Yan,
Hongkun Nie,
Guoru Li,
Junting Liu,
Bingnan Shi,
Kejian Yang,
Jingliang He
Publication year - 2018
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.26.031657
Subject(s) - saturable absorption , materials science , diselenide , laser , optics , tungsten diselenide , optoelectronics , absorption (acoustics) , wavelength , fiber laser , transition metal , chemistry , biochemistry , physics , selenium , metallurgy , composite material , catalysis
A noble transition metal dichalcogenide, bilayers platinum diselenide (PtSe 2 ), has a narrow bandgap (0.21 eV) and high charge carrier mobility. This metal was manufactured for use as a saturable absorber via the chemical vapor deposition method. The saturable absorption properties of samples, at a wavelength of 2.0 μm, were characterized by the open aperture Z-scan method. An all-solid-state 2.0 μm passively Q-switched laser was achieved experimentally based on the as-prepared bilayers PtSe 2 saturable absorber. The maximum average output power, shortest pulse width, highest single-pulse energy, and highest pulse peak power of this laser were 1.41 W, 244 ns, 24.3 μJ, and 99.6 W, respectively.