Q-switched fiber laser operating at 1 μm region with electron beam deposited titanium nanoparticles
Document Type
Article
Publication Date
1-1-2019
Abstract
We demonstrate the generation of Q-switched pulse train in Ytterbium-Doped Fiber Laser (YDFL) cavity by employing titanium (Ti) thin film as a passive saturable absorber (SA). The Ti-SA was fabricated by depositing Ti particles using electron beam evaporation on the surface of a polyvinyl alcohol (PVA) thin film. Subsequently, a stable Q-switching pulse train was successfully generated by introducing the Ti-SA into a laser cavity. The laser generated a self-starting pulse train with repetition rate that is tunable from 42.96 to 98.12 kHz as the 980 nm pump power is increased from 122.5 mW to 197 mW. At 197 mW pump power, the laser produced a Q-switching pulse train with pulse duration and pulse energy of 3.95 μs and 57.48 nJ, respectively. This demonstration proves that Ti-SA is suitable for generating Q-switched fiber laser. Furthermore, it is easy and cheap to fabricate. © 2019 Elsevier Ltd
Keywords
Electron beam evaporation, Poly (vinyl alcohol) (PVA), Q-switched fiber lasers, Q-switched pulse, Repetition rate, Switching pulse, Titanium nanoparticles, Ytterbium-doped fiber lasers
Divisions
fac_eng,photonics
Funders
National Key R&D Program of China under grant 2016YFE0126500,National Natural Science Foundation of China (NSFC) under grant 61575050,Fundamental Research Funds for the Central Universities under grant HEUCFG201841,Key Program for Natural Science Foundation of Heilongjiang Province of China under grant ZD2016012,Open Fund of the State Key Laboratory on Integrated Optoelectronics under Grant IOSKL2016 KF03,University of Malaya under the grant schemes (Grant No: PG004-2016A and FG006-17AFR)
Publication Title
Optics & Laser Technology
Volume
120
Publisher
Elsevier