Mode-locked thulium-holmium doped fiber laser using Bi2Se3 saturable absorber deposited onto arc-shaped and side polished fibers via airbrush spraying technique

Ahmad, Harith and Rusni, N A M and Samion, M Z and Yusoff, N and Zaini, M K A and Thambiratnam, Kavintheran and Ismail, M F (2024) Mode-locked thulium-holmium doped fiber laser using Bi2Se3 saturable absorber deposited onto arc-shaped and side polished fibers via airbrush spraying technique. Materials Research Express, 11. pp. 1-13. ISSN 20531591

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Abstract

In this paper, the mode-locking performance using bismuth selenide (Bi2Se3) as a saturable absorber in a thulium-holmium-doped fiber laser (THDFL) was demonstrated for the first time. The saturable absorber (SA) was coated using an airbrush spraying technique onto two different hosts, arc-shaped and side-polished fibers. The airbrush was used to provide an even and uniform coating onto these two hosts. The generated mode-locked pulses of the arc-shaped fiber have a center wavelength of 1913.5 nm and a 3-dB bandwidth of 3.11 nm. The optical output has a repetition frequency of 13.9 MHz and an optical pulse width of 1.33 ps. In the case of the side-polished fiber, it has a center wavelength of 1918.55nmand a 3-dB bandwidth of 2.60 nm. The output pulse has a repetition frequency of 12.16MHzand an optical pulse width of 1.43 ps. This demonstration indicates that the arc-shaped fiber host has a better performance in terms of shorter pulse width, which is essential for a 2 μmlaser in tissue ablation procedures for medical applications.

Item Type:	Article (Journal)
Uncontrolled Keywords:	thulium-holmium doped fiber laser, bismuth selenide, airbrush spraying, arc-shaped fiber, side-polished fiber
Subjects:	Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science > Department of Physics Kulliyyah of Science
Depositing User:	Ts. Dr. Kavintheran Thambiratnam
Date Deposited:	20 Dec 2024 08:48
Last Modified:	20 Dec 2024 08:48
URI:	http://irep.iium.edu.my/id/eprint/116955

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