Open AccessA 113 fs fiber laser operating at 156 μm using a cascadable film-type saturable absorber with P3HT-incorporated single-wall carbon nanotubes coated on polyamide
Author(s) -
Fumio Shohda,
Masataka Nakazawa,
Junji Mata,
Jun Tanida
Publication year - 2010
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.18.009712
Subject(s) - saturable absorption , materials science , carbon nanotube , polyamide , laser , fiber laser , absorption (acoustics) , optics , optoelectronics , fiber , composite material , physics
We successfully fabricated a cascadable film-type single-wall carbon nanotube (SWNT) saturable absorber coated on aromatic polyamide film, in which the saturable absorption effect can be controlled with the number of films. A conductive polymer P3HT (poly-3-hexylthiophene) was adopted to obtain a uniform SWNT solution. We applied saturable absorber films to a passively mode-locked fiber laser and successfully generated a 113 fs, 42 MHz pulse by inserting two film layers between fiber connectors in the cavity.