Open Access440 fs, 92 GHz regeneratively mode-locked erbium fiber laser with a combination of higher-order solitons and a SESAM saturable absorber
Author(s) -
Toshihiko Hirooka,
Kazunari Tokuhira,
Masato Yoshida
Publication year - 2016
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.24.024255
Subject(s) - saturable absorption , materials science , fiber laser , erbium , optics , pulse (music) , laser , mode locking , fiber , soliton , optoelectronics , nonlinear system , physics , quantum mechanics , detector , composite material
We report a regeneratively FM mode-locked erbium fiber laser operating at 9.2 GHz, in which a SESAM saturable absorber and a higher-order soliton effect are combined to generate a 440 fs pulse train. Higher-order solitons have a narrow center peak while accompanied by pedestals on the wing, but such components can be well suppressed by the saturable absorber, which enables very efficient pulse narrowing. As a result, 440 and 480 fs transform-limited sech pulses were successfully obtained at output powers of 15 and 45 mW, respectively.