Dual-wavelength all-fiber Q-switched fiber laser using bismuth-doped fiber as saturable absorber

Ghosh, Aruna and Diblawe, Abdulkadir Mukhtar and Samanta, Uttam Kumar and Yasin, Moh and Harun, Sulaiman Wadi and Paul, Mukul Chandra (2024) Dual-wavelength all-fiber Q-switched fiber laser using bismuth-doped fiber as saturable absorber. Optoelectronics Letters, 20 (3). 147 – 151. ISSN 1673-1905, DOI https://doi.org/10.1007/s11801-024-3085-6.

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Official URL: https://doi.org/10.1007/s11801-024-3085-6

Abstract

A passively Q-switched all-fiber laser is demonstrated using a 10-cm-long bismuth-doped fiber (BDF) as a saturable absorber (SA). The dual-wavelength operation was obtained due to the nonlinear effect inside the fabricated BDF, which has a high germanium content. Stable Q-switched pulses were obtained at the dual synchronous wavelengths of 1 530.1 nm and 1 531.1 nm. When the pump power is tuned from 105.3 mW to 191.0 mW, the repetition rate can be varied from 82.6 kMz to 117.6 kHz. The maximum pulse energy and average output power were 83.4 nJ and 9.8 mW, respectively while the minimum pulse width was 8.5 µs at the maximum pump power of 191.0 mW. Our results indicate that BDF could be a promising alternative optical modulator for pulsed fiber laser application. © 2024, Tianjin University of Technology.

Item Type: Article
Funders: UNSPECIFIED
Additional Information: Cited by: 0
Uncontrolled Keywords: Bismuth; Fiber lasers; Fibers; Light modulators; Optical pumping; Pulsed lasers; Q switching; A; All fiber; All-fiber lasers; Bismuth-doped; Doped fiber; Dual-wavelength; Germanium contents; Nonlinear effect; Passively Q-switched; Q-switched fiber lasers; Saturable absorbers
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering > Department of Electrical Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 15 Nov 2024 02:55
Last Modified: 15 Nov 2024 02:55
URI: http://eprints.um.edu.my/id/eprint/44714

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