Switchable dual‑wavelength CNT‑based Q‑switched using arrayed waveguide gratings (AWG)

Ahmad, Harith and Hamdan, K.Z. and Muhammad, Farah Diana and Harun, Sulaiman Wadi and Zulkifli, Mohd Zamani (2015) Switchable dual‑wavelength CNT‑based Q‑switched using arrayed waveguide gratings (AWG). Applied Physics B, 118 (2). pp. 269-274. ISSN 0946-2171 E-ISSN 1432-0649

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Abstract

In this paper, a dual-wavelength synchronously pulsed fiber laser Q-switched by carbon nanotube-based saturable absorber with switchable wavelength spacing enabled using arrayed waveguide grating (AWG) is proposed and demonstrated. By just switching the channels of the AWG, discrete tuning in wavelength spacing of the dual-wavelength Q-switched laser operation can be attained over several nanometers, ranging from 1.6 to 4.0 nm in a stable dual-wavelength regime without employing any modulation technique or intracavity spectral filters. Our experimental results show that the fiber laser can generate Q-switched microsecond pulses with a wide repetition rate range, starting from 12.0 kHz to a maximum value of 54.9 kHz. This proposed system is also reasonably simple to realize at low cost.

Item Type:	Article (Journal)
Additional Information:	8870/84062
Uncontrolled Keywords:	Carbon nanotubes, Fiber lasers, Modulation, Optical wave guides, Pulse repetition rate ,Pulsed lasers, Q switched lasers, Q switching, Saturable absorbers, Switched filters, Wave guides, Yarn
Subjects:	T Technology > T Technology (General)
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:	05 Nov 2020 12:01
Last Modified:	09 Dec 2020 10:48
URI:	http://irep.iium.edu.my/id/eprint/84062

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