Chin. Phys. Lett.  2017, Vol. 34 Issue (3): 034205    DOI: 10.1088/0256-307X/34/3/034205
FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
Q-Switching Pulse Operation in 1.5-μm Region Using Copper Nanoparticles as Saturable Absorber
A. R. Muhammad1, M. T. Ahmad1, R. Zakaria2, H. R. A. Rahim1, S. F. A. Z. Yusoff2, K. S. Hamdan2, H. H. M. Yusof1, H. Arof1, S. W. Harun1**.
1Department of Electrical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
2Photonics Research Centre, Physics Department, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
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A. R. Muhammad, M. T. Ahmad, R. Zakaria et al  2017 Chin. Phys. Lett. 34 034205
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Abstract We demonstrate a passively Q-switched erbium-doped fiber laser (EDFL) using a copper nanoparticle (CuNP) thin film as the saturable absorber in a ring cavity. A stable Q-switched pulse operation is observed as the CuNP saturable absorber (SA) is introduced in the cavity. The pulse repetition rate of the EDFL is observed to be proportional to the pump power, and is limited to 101.2 kHz by the maximum pump power of 113.7 mW. On the other hand, the pulse width reduces from 10.19 μs to 4.28 μs as the pump power is varied from 26.1 mW to 113.7 mW. The findings suggest that CuNP SA could be useful as a potential saturable absorber for the development of the robust, compact, efficient and low cost Q-switched fiber laser operating at 1.5-μm region.
Received: 14 November 2016      Published: 28 February 2017
PACS:  42.55.Wd (Fiber lasers)  
  42.60.Fc (Modulation, tuning, and mode locking)  
  42.70.-a (Optical materials)  
Fund: Supported by the University of Malaya under Grant Nos PG173-2015B and PG004-2016A.
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https://cpl.iphy.ac.cn/10.1088/0256-307X/34/3/034205       OR      https://cpl.iphy.ac.cn/Y2017/V34/I3/034205
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Articles by authors
A. R. Muhammad
M. T. Ahmad
R. Zakaria
H. R. A. Rahim
S. F. A. Z. Yusoff
K. S. Hamdan
H. H. M. Yusof
H. Arof
S. W. Harun.
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