Passively mode-locked erbium-doped fiber laser based on a nanodiamond saturable absorber

Shakaty, Aseel A. and Hmood, Jassim K. and Mahdi, Bushra R. and Harun, Sulaiman Wadi (2022) Passively mode-locked erbium-doped fiber laser based on a nanodiamond saturable absorber. Applied Optics, 61 (14). pp. 4047-4054. ISSN 1559-128X, DOI

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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

Item Type: Article
Funders: University of Technology, Iraq
Uncontrolled Keywords: Mode-locked erbium-doped fiber laser; Nanodiamond; Saturable absorber
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering > Department of Electrical Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 29 Aug 2023 01:52
Last Modified: 29 Aug 2023 01:52

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