Mechanically exfoliated In2Se3 as a saturable absorber for mode-locking a thulium-doped fluoride fiber laser operating in S-band

Ahmad, Harith and Reduan, Siti Aisyah and Ooi, Shok Ing and Ismail, Mohd Afiq (2018) Mechanically exfoliated In2Se3 as a saturable absorber for mode-locking a thulium-doped fluoride fiber laser operating in S-band. Applied Optics, 57 (24). p. 6937. ISSN 1559-128X

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Official URL: https://doi.org/10.1364/AO.57.006937

Abstract

The rise of 2D materials since the discovery of graphene has been exponential. Their mechanical, electrical and optical properties are exceptional, similar to their 3D counterparts. In this paper, an α − In2Se3 crystal is mechanically exfoliated and transferred directly onto a fiber ferrule to serve as a saturable absorber (SA). A thulium-doped fluoride fiber is used as a gain medium to generate mode-locked pulses together with the In2Se3-based SA. The SA has a modulation depth of 14.6% and a saturation intensity of 0.4 kW∕cm2. The passively generated mode-locked pulses have a repetition rate of 6.93 MHz and a pulse width of 5.79 ps. The mode-locked pulses also have a signal-to-noise ratio of 65.4 dB and a time-bandwidth product of 0.36. The pulse energy and peak power are 0.179 nJ and 27.2 W, respectively.

Item Type: Article
Uncontrolled Keywords: Electrical and optical properties; Fluoride fibers; Mode-locked pulse; Modulation depth; Pulse energies; Repetition rate; Saturation intensity; Time bandwidth product
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 07 Oct 2019 02:27
Last Modified: 07 Oct 2019 02:27
URI: http://eprints.um.edu.my/id/eprint/22671

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