Poly (N-vinyl Carbazole) – Polypyrrole/graphene oxide nanocomposite material on tapered fiber for Q-switched pulse generation

Ahmad, Harith and Faruki, Md Jahid and Jasim, Ali Abdulhadi and Ooi, Shok Ing and Thambiratnam, Kavintheran (2018) Poly (N-vinyl Carbazole) – Polypyrrole/graphene oxide nanocomposite material on tapered fiber for Q-switched pulse generation. Optics & Laser Technology, 99. pp. 184-190. ISSN 0030-3992

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Official URL: https://doi.org/10.1016/j.optlastec.2017.09.001

Abstract

A passively Q-switched fiber laser using a Saturable Absorber (SA) fabricated from a new Poly (N-vinyl Carbazole) – Polypyrrole/Graphene Oxide (PNVC-PPy/GO) nanocomposite material deposited on a tapered fiber is proposed and demonstrated. The PNVC-PPy/GO composition is deposited along a 3 mm length of the 6.5 cm tapered fiber which has a tapered waist of 8 µm. Q-switched pulses are obtained with repetition rates of 25.15–42.7 kHz and pulse widths of 5.74–2.48 μs over a pump power range of 12.8–40.0 mW. A maximum average power of 0.19 mW and pulse energy of 4.43 nJ are also observed. The proposed Q-switched maintains advantages of a simple design and low fabrication cost while at the same time generating high quality Q-switched pulses.

Item Type: Article
Uncontrolled Keywords: Q-switched pulses; Graphene oxide; Poly (N-vinyl Carbazole) – Polypyrrole; Fiber laser; Optical tapered fiber
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 00:38
Last Modified: 07 Oct 2019 00:38
URI: http://eprints.um.edu.my/id/eprint/22655

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