Ultrashort pulse generation using tantalum aluminum carbide as a pulse modulator

Naidu, Ruven Rhaj and Ahmad, Aeriyn D. and Masruroh, - and Ali, Hasanain N. A. and Zakaria, Rozalina and Khudus, Muhammad Imran M. A. and Harun, Sulaiman W. (2025) Ultrashort pulse generation using tantalum aluminum carbide as a pulse modulator. Applied Optics, 64 (2). pp. 436-442. ISSN 1559-128X, DOI https://doi.org/10.1364/AO.545745.

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Abstract

This paper investigates the use of tantalum aluminum carbide (Ta2AlC) as a passive pulse modulator for generating ultrafast mode-locked pulses in an erbium-doped fiber (EDF) laser cavity. The Ta2AlC modulator was prepared via an embedding method using polyvinyl alcohol as the host matrix, exhibiting a saturable absorption of 6.9% with a saturable intensity of 100 MW/cm2. When integrated into a long EDF laser cavity, the modulator enabled the generation of a picosecond soliton pulse train. Operating within a pump range of 95.2 to 210.62 mW, the self-starting mode-locked EDF laser achieved a central wavelength of 1561.7 nm, a repetition rate of 1.866 MHz, and a pulse width of 3.80 ps. These findings demonstrate that Ta2AlC is an effective passive modulator for ultrafast laser generation through mode locking. (c) 2025 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.

Item Type: Article
Funders: UNSPECIFIED
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering > Department of Electrical Engineering
Faculty of Science > Department of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 26 May 2025 02:05
Last Modified: 26 May 2025 02:05
URI: http://eprints.um.edu.my/id/eprint/48008

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