Ahmad, H and Ismail, Mohammad Faizal and Hassan, S.N.M and Ahmad, Faizah and Zulkifli, Mohd Zamani and Harun, Sulaiman Wadi (2014) Multiwall carbon nanotube polyvinyl alcohol-based saturable absorber in passively Q-switched fiber laser. Applied Optics, 53 (30). pp. 7025-7029. ISSN 1559-128X E-ISSN 2155-3165
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Abstract
In this work, we demonstrated a compact Q-switched erbium-doped fiber laser capable of generating high-energy pulses using a newly developed multiwall carbon nanotube (CNT) polyvinyl alcohol (PVA) thin film based saturable absorber. Q-switched pulse operation is obtained by sandwiching the thin film between two fiber ferrules forming a saturable absorber. A saturable absorber with 1.25 wt. % of PVA concentration shows a consistency in generating pulsed laser with a good range of tunable repetition rate, shortest pulse width, and produces a high pulse energy and peak power. The pulse train generated has a maximum repetition rate of 29.9 kHz with a corresponding pulse width of 3.49 μs as a function of maximum pump power of 32.15 mW. The maximum average output power of the Q-switched fiber laser system is 1.49 mW, which translates to a pulse energy of 49.8 nJ. The proposed method of multiwall CNT/PVA thin film fabrication is low in cost and involves uncomplicated processes.
| Item Type: | Article (Journal) |
|---|---|
| Additional Information: | 8870/84298 |
| Uncontrolled Keywords: | Carbon nanotubes, Fiber lasers, Fibers, Nano tubes, Optical pumping, Polyvinyl alcohols, Pulse repetition rate, Pulsed lasers, Q switched lasers, Q switching, Saturable absorbers, Thin films, Yarn |
| Subjects: | Q Science > QC Physics |
| Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): | Kulliyyah of Science > Department of Physics Kulliyyah of Science |
| Depositing User: | Dr M Z Zulkifli |
| Date Deposited: | 17 Nov 2020 16:57 |
| Last Modified: | 17 Nov 2020 16:57 |
| URI: | http://irep.iium.edu.my/id/eprint/84298 |
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