Copper oxide nanomaterial saturable absorber as a new passive Q-switcher in erbium-doped fiber laser ring cavity configuration
Document Type
Article
Publication Date
1-1-2018
Abstract
A passively Q-switched erbium-doped fiber laser (EDFL) operating at 1560 nm is demonstrated by using a copper oxide (CuO) film as a saturable absorber (SA). The SA was prepared by embedding CuO nanoparticles (NPs) into a polyvinyl alcohol (PVA) by solution casting method. The CuO-SA has a modulation depth of 3.5% and a saturation intensity of 3.3 MW/cm2. By incorporating the CuO-SA into the laser cavity, stable Q-switched pulses were achieved at pump threshold of 70 mW. A maximum pulse energy of 66 nJ, tunable pulse repetition rate (P.R.R.) from 69 to 83 kHz, with a shortest pulse width of 2.6 µs were recorded at pump power of 159 mW. To the best of author's knowledge, this is the first demonstration of passively Q-switched EDFL based on CuO-SA.
Keywords
Q-switched, Erbium doped fiber, Passive, CuO, Saturable absorber
Divisions
fac_eng
Funders
Institute of Laser for Postgraduate Studies at University of Baghdad in Iraq,Ministry of Higher Education and Scientific Research in Iraq
Publication Title
Results in Physics
Volume
10
Publisher
Elsevier