Bismuth-doped fiber as Q-switcher in hafnium bismuth erbium co-doped fiber laser
Document Type
Article
Publication Date
11-1-2020
Abstract
We demonstrate a compact, all-fiber Q-switched hafnium bismuth erbium co-doped fiber laser based on bismuth-doped fiber (BDF) as the saturable absorber (SA). The laser cavity was constructed using a homemade hafnium bismuth erbium co-doped fiber as gain medium. It was found that stable Q-switched pulses operating at 1531.74 nm can be readily generated when the 980 nm pump power is raised above the threshold of 96 mW. By increasing the pump power to the maximum power of 198 mW, the repetition rate was tunable from 27.2 to 59.1 kHz while the pulse width reduces from 36.3 to 6.8 mu s. At the maximum pump power, the Q-switched laser produced a pulse energy of 10.1 nJ. The finding provides evidence of the possibility of BDF as an effective SA for Q-switched laser operating in 1.5 mu m region.
Keywords
Bismuth-doped fiber, Fiber saturable absorber, Q-switching
Divisions
sch_ecs
Funders
Universiti Malaya [Grant No: FP068‐2019A]
Publication Title
Microwave and Optical Technology Letters
Volume
62
Issue
11
Publisher
John Wiley & Sons
Publisher Location
111 RIVER ST, HOBOKEN 07030-5774, NJ USA