Passively mode-locked erbium-doped fiber laser based on a nanodiamond saturable absorber
Document Type
Article
Publication Date
5-1-2022
Abstract
In this paper, we propose nanodiamond (ND) material as a saturable absorber (SA) to generate short pulses from a mode-locked erbium-doped fiber laser (EDFL). The ND-SA is fabricated by the drop-casting method using polyvinyledenedifluoride-trifluoroethylene as a host polymer and methyl ethel ketone as a solvent liquid. The SA, which possesses 20% ND concentration, has a 5.46% modulation depth with 2000 MW/cm(2) saturation intensity. Sequentially, the performance of the EDFL is investigated after integrating an ND-SA within the laser ring. The results reveal that the presented ND-SAs produce stable ultrashort laser pulses. Moreover, the fabricated ND film is a promising solid film for many photonic schemes. The proposed mode-locked EDFL-based ND-SA starts a mode-locking operation at a pumped power of 116 mW. The generated mode-locked pulses have a pulse duration of 0.84 ps, a repetition rate of 1.93 MHz, and a power of 0.517 mW, at a pumped power of 187 mW. Finally, to the best of our knowledge, this is the first time that the ND-SA has been used as a mode locker within the EDFL as a thin film and with the suggested fabrication method. (C) 2022 Optica Publishing Group
Keywords
Mode-locked erbium-doped fiber laser, Nanodiamond, Saturable absorber
Divisions
sch_ecs
Funders
University of Technology, Iraq
Publication Title
Applied Optics
Volume
61
Issue
14
Publisher
Optical Publishing Group
Publisher Location
2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA