Graphene Oxide Film as Passive Q-switcher in Erbium-doped Fiber Laser Cavity
Document Type
Article
Publication Date
1-1-2017
Abstract
All-fiber passively Q-switched fiber lasers have been demonstrated by using a graphene oxide (GO) Q-switcher for possible applications in telecommunication, laser processing, fiber sensing and medicine. The GO material was obtained through a modified Hummers method from expanded acid washed graphite flakes and was embedded into a polyvinyl alcohol (PVA) film to form a saturable absorber (SA) device. The Q-switched pulse operates at 1563.3nm with a repetition rate that can be tuned from 44.33kHz to 61.77kHz as the pump power changes from 39mW to 96mW. The highest repetition rate of 61.77kHz is achieved at a pump power of 96mW and it is observed that the Q-switched pulse produced a maximum pulse energy of 0.054nJ and pulse width of 5.57μs at 96mW pump power.
Keywords
Fiber lasers, Fibers, Graphene, Optical pumping, Oxide films, Pulse repetition rate, Saturable absorbers
Publication Title
Photonics Letters of Poland
Divisions
fac_eng
Volume
9
Issue
3
Publisher
Photonics Society of Poland