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
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
Publication Title
Optics & Laser Technology
Volume
105
Publisher
Elsevier