Open AccessPassively cascade-pulsed erbium ZBLAN all-fiber laser
Author(s) -
Tzong Yow Tsai,
Yen Cheng Fang,
Hong Xi Tsao,
S. T. Lin,
Chieh Hu
Publication year - 2012
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.20.012787
Subject(s) - zblan , materials science , fiber laser , optics , erbium , population inversion , cascade , laser , photon upconversion , optoelectronics , physics , chemistry , chromatography
We propose and numerically demonstrate a cascade pulsing mechanism in a CW-pumped Er³⁺:ZBLAN all-fiber laser system. In the design, the laser was pumped at 980 nm and passively Q-switched at 1.6 μm. The Q-switched resonance reduced the population on ⁴/13/2 of the erbium gain fiber, thereby creating a population inversion between the levels of 4/11/2 and ⁴/13/2, and instantly inducing an intense gain-switched pulse at 2.7 μm. Sequential 2.7-μm single-mode pulsing with a pulse energy of 170 μJ and a peak power of 6 kW was achieved with an absorbed pump power of 0.65 W.