title: A 113 fs fiber laser operating at 1.56 mum using a cascadable film-type saturable absorber with P3HT-incorporated single-wall carbon nanotubes coated on polyamide.
abstract: 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.
authors.affiliation: Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577 Japan. f-shohda@riec.tohoku.ac.jp
authors.forename: Fumio
authors.initials: F
authors.lastname: Shohda
authors.forename: Masataka
authors.initials: M
authors.lastname: Nakazawa
authors.forename: Junji
authors.initials: J
authors.lastname: Mata
authors.forename: Jun
authors.initials: J
authors.lastname: Tsukamoto