Open AccessCompact tunable high power picosecond source based on Yb-doped fiber amplification of gain switch laser diode
Author(s) -
Hongjun Liu,
Chao Gao,
Jintao Tao,
Wei Zhao,
Yishan Wang
Publication year - 2008
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.16.007888
Subject(s) - materials science , optics , optoelectronics , picosecond , fiber laser , laser diode , laser , preamplifier , amplified spontaneous emission , amplifier , diode , wavelength , physics , cmos
A compact tunable high power picosecond source based on Yb-doped fiber amplification of gain switch laser diode is demonstrated. A multi-stage single mode Yb-doped fiber preamplifier was combined with a single mode double-clad Yb-doped fiber main amplifier to construct the amplification system, which is seeded by a gain switch laser diode. By optimizing preamplifier???s parameters to compensate the seed spectrum gain, a "flat top" broadband spectrum is obtained to realize wavelength tunable output with a self-made tunable filter. The tunable pulses were further amplified to 3.5 W average power 90 ps pulses at 1 MHz repetition rate, and the center wavelength was tunable in the ranges from 1053 nm to 1073 nm with excellent beam quality.