Nickel oxide nanoparticles grafted with Chitosan as saturable absorber for tunable passively Q-switched fiber laser in S+/S band
Document Type
Article
Publication Date
1-1-2018
Abstract
A tunable, passively Q-switched fiber laser using nickel oxide nanoparticles grafted onto a chitosan host (NiO/Chitosan) as saturable absorber (SA) is proposed and demonstrated for operation in the S+/S band region. The generated Q-switched pulses can be tuned from 1452 nm to 1515 nm, giving a tuning range of 63 nm. The pulses have a repetition rate from 12.3 kHz to 30.8 kHz as well as minimum pulse width and maximum pulse energy of 3.5 µs and 61.0 nJ, respectively at maximum pump power of 135.8 mW. To the best of the author's knowledge, this is the first time that tunable Q-switching operation in the S+/S band region is obtained using a NiO/Chitosan based SA.
Keywords
Thulium-fluoride fiber laser, Q-switched, S-Band, Fiber Laser, Saturable absorber, Nanoparticles, Nickel oxide, Chitosan
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
Infrared Physics & Technology
Volume
93
Publisher
Elsevier