Bulk α-alumina embedded tapered fiber as Q-switcher in an erbiumdoped fiber laser

Mohd Yusof, Norita and Liew Ying Chyi, Josephine and Ng, Eng Khoon and Md Zain, Ahmad Rifqi and Alresheedi, Mohammed Thamer and Mayzan, Mohd Zul Hilmi and Mahdi, Mohd Adzir (2024) Bulk α-alumina embedded tapered fiber as Q-switcher in an erbiumdoped fiber laser. Physica Scipta, 99. pp. 1-10.

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Abstract

We present bulk α-alumina (Al2O3) in a polydimethylsiloxane matrix decorated tapered fiber as a Q-switcher for microsecond pulse generation. The integration of α-Al2O3-saturable absorber(SA) in an erbium-doped fiber laser yielded a Q-switched operating regime within 62.0–308.6 mW pump power. The shortest pulse width was 7 μs, whereas the repetition rate was tunable from 19.17 to 43.24 kHz. This work reveals a substantial improvement over previously reported Al2O3-SA works with a recorded pulse energy of 150.32 nJ and an estimated damage threshold of beyond 6.75 GW cm−2 incident intensity. Our findings suggest that α-Al2O3-SA has enormous potential as a next generation light-absorbing material for high-energy photonic devices.

Item Type:	Article
Uncontrolled Keywords:	aluminum oxide, fiber laser, Q-switched, saturable absorber
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Applied Science and Technology > FAST
Depositing User:	Mr. Mohamad Zulkhibri Rahmad
Date Deposited:	16 Dec 2024 23:46
Last Modified:	16 Dec 2024 23:48
URI:	http://eprints.uthm.edu.my/id/eprint/12296

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