Tunable Q-switched thulium-doped fiber laser (TDFL) in 2.0 µm region based on gallium selenide saturable absorber
Document Type
Article
Publication Date
1-1-2018
Abstract
A tunable Q-switched thulium-doped fiber laser (TDFL) using a Gallium Selenide (GaSe) based saturable absorber (SA) is proposed and demonstrated for operation in the 2.0 µm region. The Q-switched TDFL operates from 1960.0 nm to 1998.0 nm, covering a wavelength range of 38.0 nm. The generated output pulses have a repetition rate from 14.9 kHz to 40.9 kHz and minimum pulse width of 4.9 µs at the maximum pump power of 126.6 mW, as well as a maximum pulse energy of 92.8 nJ. This is, to the author's knowledge, the first successful combination of a TDF and a GaSe based SA to generate tunable Q-switched pulses in 2.0 µm region.
Keywords
Passively Q-switched, Thulium-doped fiber laser, Gallium selenide (GaSe), Saturable absorber, 2.0 µm region fiber laser
Publication Title
Optics & Laser Technology
Divisions
photonics
Funders
Ministry of Higher Education, (MOHE) Malaysia for funding this research under the grant LRGS (2015) NGOD/UM/KPT,University of Malaya for funding this research under the grants RU 001-2017 and RP 029A – 15 AFR
Volume
105
Publisher
Elsevier