Open AccessUltra-short pulse operation of all-optical fiber passively mode-locked ytterbium laser
Author(s) -
V. P. Kalosha,
Liang Chen,
Xiaoyi Bao
Publication year - 2006
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.14.004935
Subject(s) - optics , materials science , fiber laser , photonic crystal fiber , ytterbium , dispersion (optics) , chirp , laser , picosecond , mode locking , dispersion shifted fiber , optical fiber , optoelectronics , wavelength , fiber optic sensor , physics
The generation regimes of an all-fiber passively mode-locked ytterbium laser with intra-cavity photonic crystal fiber have been studied with the aim to provide recipes for obtaining chirp-free sub-picosecond pulses directly from the cavity. Small-beam area photonic-crystal fiber is used for dispersion compensation of the intra-cavity normal dispersion of b-doped and single-mode fibers as well as for spectrum expanding due to enhanced nonlinearity. Regions of the gain and fiber parameters near the generation threshold were found in both cases of normal and anomalous net intra-cavity dispersion, which provide a stable generation of ultra-short sub-picosecond pulses directly from the cavity. Laser parameters of a transition to the multi-pulsed generation regimes were also found.