Open AccessSingle-frequency Bismuth-doped fiber laser with quasi-continuous self-sweeping
Author(s) -
Ivan A. Lobach,
S. I. Kablukov,
Mikhail Melkumov,
V. F. Khopin,
Sergey A. Babin,
E. M. Dianov
Publication year - 2015
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.23.024833
Subject(s) - optics , materials science , laser , fiber laser , chirp , bismuth , pulse (music) , physics , detector , metallurgy
Generation of regular pulses of linearly polarized radiation with periodic self-induced laser line sweeping by ~10 nm near central wavelength of ~1460 nm has been demonstrated for the first time in an all-fiber Bismuth laser without any tuning element. It has been shown that the radiation of each pulse is single-frequency, and the pulse-to-pulse frequency shift is as low as 1 MHz corresponding to one intermode interval in 100-m long laser cavity. The measured intra-pulse frequency chirp is below 1 MHz while the pulses are long (~10 μs) and overlapping. Thus the sweeping is nearly continuous in frequency and time domains.