Poly(3-hexylthiophene-2,5-diyl) regioregular (P3HT) thin film as saturable absorber for passively Q-switched and mode-locked Erbium-doped fiber laser

Samsamnun, Farina Saffa Mohamad and Zulkipli, Nur Farhanah and Sarjidan, Mohd Arif Mohd and Harun, Sulaiman Wadi and Abd Majid, Wan Haliza and Abdul Khudus, Muhammad Imran Mustafa and Shuhaimi, Ahmad and Rosol, Ahmad Haziq Aiman and Rusdi, Muhammad Farid Mohd and Jafry, Afiq Arif Aminuddin and Yasin, Moh (2020) Poly(3-hexylthiophene-2,5-diyl) regioregular (P3HT) thin film as saturable absorber for passively Q-switched and mode-locked Erbium-doped fiber laser. Optical Fiber Technology, 54. p. 102073. ISSN 1068-5200

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Official URL: https://doi.org/10.1016/j.yofte.2019.102073

Abstract

Q-switched and mode-locked Erbium-doped fiber lasers (EDFLs) were demonstrated using poly(3-hexylthiophene-2,5-diyl) regioregular (P3HT) organic semiconductor in the form of thin film as a saturable absorber (SA). The P3HT thin film is cut into small pieces and sandwiched between two ferrules in EDFL cavity to generate a stable Q-switching and mode-locking pulse train. By increasing the 980 nm pump power from 63 mW to 125 mW, the repetition rate of the EDFL increases from 62.97 kHz to 78.63 kHz while the pulse width decreases from 5.52 µs to 3.79 μs. The maximum pulse energy of 15.05 nJ is generated with repetition rate and pulse width of 78.63 kHz and 3.79 μs, respectively. Meanwhile, self-starting mode-locked EDFL arises as the pump power raises from 125 mW to 187 mW. As the pump power increases to the maximum, the repetition rate is almost constant of 1.838 MHz and pulse width of 2.62 ps are observed. The mode-locked EDFL operated at 1563 nm wavelength. This experiment shows that P3HT SA can be used to generate stable Q-switched and mode-locked pulsed lasers. © 2019 Elsevier Inc.

Item Type: Article
Uncontrolled Keywords: Erbium; Fiber lasers; Locks (fasteners); Optical pumping; Organic lasers; Pulse repetition rate; Pulsed lasers; Q switching; Saturable absorbers; Semiconductor lasers; Thin films
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Faculty of Science > Dept of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 23 Jul 2020 07:20
Last Modified: 23 Jul 2020 07:20
URI: http://eprints.um.edu.my/id/eprint/25164

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