Open AccessA Q-switched, mode-locked fiber laser employing subharmonic cavity modulation
Author(s) -
Young Eun Chang,
Junsu Lee,
Ju Han Lee
Publication year - 2011
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.19.026627
Subject(s) - optics , fiber laser , modulation (music) , laser , envelope (radar) , materials science , frequency modulation , mode locking , amplitude modulation , subharmonic , physics , bandwidth (computing) , telecommunications , acoustics , nonlinear system , computer science , radar , quantum mechanics
We present a new and simple approach for the generation of Q-switched, mode-locked pulses from a laser cavity. The approach is based on cavity loss modulation that employs a subharmonic frequency of the fundamental intermode frequency spacing. A range of experiments have been carried out using an erbium-doped fiber-based ring cavity laser in order to verify that this simple approach can readily produce high quality Q-switched, mode-locked pulses. An active tuning of the Q-switched envelope repetition rate is also shown to be easily achievable by adjusting the order of the applied subharmonic frequency.