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Performance of passively Q-switched ring erbium-doped fiber laser using a multiwalled carbon nanotubes polyethylene oxide (PEO) polymer composite-based saturable absorber

Haris, H. and Anyi, C. L. and Muhammad, A. R. and Ahmad, F. and Nor, R. M. and Zulkepely, N. R. and Ali, N. M. and Harun, S. W. and Arof, H. (2015) Performance of passively Q-switched ring erbium-doped fiber laser using a multiwalled carbon nanotubes polyethylene oxide (PEO) polymer composite-based saturable absorber. Microwave And Optical Technology Letters, 57 (8). pp. 1897-1901. ISSN 0895-2477

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Official URL: http://dx.doi.org/10.1002/mop.29224

Abstract

The aim of this article is to report the fabrication and characterization of dispersed multiwalled carbon nanotubes (MWCNTs) polymer composites and use them as passive SAs in Q-switched Erbium-doped fiber (EDF) for ultrafast laser generation at 1.5-µm region. CNT polymer composites were fabricated into thin films by homogenizing different concentrations (1.8, 4.8, and 10.1 wt. %) of MWCNTs with host polymers polyethylene oxide. The fabricated thin film was then deposited between two fiber connectors as passive SA and incorporated into fiber laser's ring oscillator. The EDFL exhibited a central wavelength of 1560.5 nm when pump power is fixed at 42 mW. The Q-switching operation starts at the lowest threshold of 39.3 mW for all the three different SA concentrations. For 1.8 wt. % MWCNTs concentration, the pulse repetition rate of the Q-switched EDFL is started from 35.6 kHz, while for 4.8 wt. % and 10.1 wt. %, the pulse repetition rate started at 78.5 and 66.1 kHz, respectively. At the MWCNTs concentration of 1.8 wt. %, the pulse energy of the Q-switched EDFL increases from 7.9 to 24.7 nJ as the pump power increases from 39.3 to 58.8 mW.

Item Type:Article
Uncontrolled Keywords:fabrication, dispersed multiwalled carbon nanotubes (MWCNTs),Q-switched Erbium-doped fiber (EDF)
Subjects:A General Works
ID Code:58802
Deposited By: Haliza Zainal
Deposited On:04 Dec 2016 12:07
Last Modified:11 Apr 2017 09:11

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