Open AccessWidely power-tunable polarization-independent ultrafast mode-locked fiber laser using bulk InN as saturable absorber
Author(s) -
M. Jiménez-Rodríguez,
L. Monteagudo-Lerma,
E. Monroy,
Miguel GonzálezHerráez,
F. B. Naranjo
Publication year - 2017
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.25.005366
Subject(s) - saturable absorption , materials science , fiber laser , optics , ultrashort pulse , laser , mode locking , optoelectronics , polarization (electrochemistry) , physics , chemistry
The growing demand of ultrafast mode-locked fiber lasers in the near infrared has boosted the research activity in this area. One of the most convenient ways to achieve passive mode locking consists of inserting a semiconductor saturable absorber in the laser cavity to modulate the losses. However, in such a configuration, the limited power range of operation is still an unsolved issue. Here we report the fabrication of an ultrafast, high-power, widely power-tunable and non-polarization-dependent mode-locked fiber laser operating at 1.55 µm, using an InN layer as saturable absorber. With post-amplification, this laser delivers 55-fs pulses with a repetition rate of 4.84 MHz and peak power in the range of 1 MW in an all-fiber arrangement.