Q-switched dual-wavelength fiber laser using a graphene oxide saturable absorber and singlemode–multimode–singlemode fiber structure

Ahmad, Harith and Zulkifli, Ahmad Zarif and Yasin, M. and Thambiratnam, K. (2016) Q-switched dual-wavelength fiber laser using a graphene oxide saturable absorber and singlemode–multimode–singlemode fiber structure. Laser Physics Letters, 13 (10). p. 105105. ISSN 1612-2011, DOI https://doi.org/10.1088/1612-2011/13/10/105105.

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Official URL: http://dx.doi.org/10.1088/1612-2011/13/10/105105

Abstract

A Q-switched dual-wavelength fiber laser using a graphene oxide-based saturable absorber to generate the desired output pulses is proposed and demonstrated. The system utilizes a singlemode-multimode-singlemode fiber structure to control the net losses in the cavity so that only two dominant wavelengths are allowed to oscillate. The proposed system is capable of generating an output with a high repetition rate of 27.1 kHz and a narrow pulse width of 4.03 μs. The output pulses also have average output power and pulse energy of up to 0.5 mW and 18.5 nJ, respectively. The 1st harmonic obtained has a high signal-to-noise ratio of 33.2 dB, indicating a highly stable pulse output with minimum mode hopping.

Item Type: Article
Funders: Grants LRGS (2015) NGOD / UM / KPT, GA 010-2014 (ULUNG) and RU 007/2015
Uncontrolled Keywords: Dual-wavelength; Graphene oxide; Q-switched; Saturable absorber; Singlemodemultimodesinglemode fiber
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Faculty of Science
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 24 Oct 2017 05:40
Last Modified: 20 Dec 2019 07:26
URI: http://eprints.um.edu.my/id/eprint/18095

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