title: High Power Q-Switched Thulium Doped Fibre Laser using Carbon Nanotube Polymer Composite Saturable Absorber.
abstract: We have proposed and demonstrated a Q-switched Thulium doped fibre laser (TDFL) with a 'Yin-Yang' all-fibre cavity scheme based on a combination of nonlinear optical loop mirror (NOLM) and nonlinear amplified loop mirror (NALM). Unidirectional lasing operation has been achieved without any intracavity isolator. By using a carbon nanotube polymer composite based saturable absorber (SA), we demonstrated the laser output power of ~197 mW and pulse energy of 1.7 μJ. To the best of our knowledge, this is the highest output power from a nanotube polymer composite SA based Q-switched Thulium doped fibre laser.
authors.affiliation: Aston Institute of Photonic Technologies (AIPT), Aston University, Aston Triangle, Birmingham, B4 7ET, United Kingdom.
authors.forename: Maria
authors.initials: M
authors.lastname: Chernysheva
authors.affiliation: Aston Institute of Photonic Technologies (AIPT), Aston University, Aston Triangle, Birmingham, B4 7ET, United Kingdom.|The Key Laboratory of Specialty Fiber Optics and Optical Access Network, Shanghai University, 200072, Shanghai, China.
authors.forename: Chengbo
authors.initials: C
authors.lastname: Mou
authors.affiliation: Aston Institute of Photonic Technologies (AIPT), Aston University, Aston Triangle, Birmingham, B4 7ET, United Kingdom.|Physics Department, Faculty of Science, University of Sulaimani, Sulaimani, Iraq-Kurdistan Region.
authors.forename: Raz
authors.initials: R
authors.lastname: Arif
authors.affiliation: Aston Institute of Photonic Technologies (AIPT), Aston University, Aston Triangle, Birmingham, B4 7ET, United Kingdom.|Engineering Department, Al Musanna College of Technology, 314, Muladdah Musanna, Sultanate of Oman.
authors.forename: Mohammed
authors.initials: M
authors.lastname: AlAraimi
authors.affiliation: Leibniz Institute of Solid State and Materials Research, IFW, Helmholtzstraβe 20, 01069 Dresden, Germany.
authors.forename: Mark
authors.initials: M
authors.lastname: Rümmeli
authors.affiliation: Aston Institute of Photonic Technologies (AIPT), Aston University, Aston Triangle, Birmingham, B4 7ET, United Kingdom.|Novosibirsk State University, 2 Pirogova Str., Novosibirsk, 630090, Russia.
authors.forename: Sergei
authors.initials: S
authors.lastname: Turitsyn
authors.affiliation: Aston Institute of Photonic Technologies (AIPT), Aston University, Aston Triangle, Birmingham, B4 7ET, United Kingdom.
authors.forename: Aleksey
authors.initials: A
authors.lastname: Rozhin