Q-switched thulium/holmium fiber laser with gallium selenide
Document Type
Article
Publication Date
1-1-2018
Abstract
A passively Q-switched thulium/holmium fiber laser with a gallium selenide (GaSe) saturable absorber (SA) is proposed and demonstrated for the first time. The GaSe based SA is prepared by mechanical exfoliation and inserted into the proposed laser cavity to generate Q-switched pulses. Stable Q-switching operation is achieved at 1986.0 nm, with output pulse repetition rates ranging from 22.9 kHz to 32.3 kHz over a pump power range of 112.0 mW to 235.0 mW. The generated Q-switched pulses have a maximum pulse energy of 120.3 nJ and minimum pulse width of 6.9 μs. The proposed thulium/holmium fiber laser with GaSe SA will be able to cater to multiple applications requiring pulsed laser outputs in the 2.0 μm region.
Keywords
Q-switched, Gallium selenide, Thulium/homium, Fiber laser
Divisions
photonics
Funders
Ministry of Higher Education, Malaysia for providing funding for this work under the grant LRGS (2015) NGOD / UM / KPT,University of Malaya, Malaysia for providing funding for this work under the grant RU001 - 2017
Publication Title
Optik
Volume
175
Publisher
Elsevier