| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Characteristics of Cladding-Pumped Short Er3+/Yb3+ Codoped Single Mode Phosphate Glass Fibre |
| XU Shan-Hui1,2, YANG Zhong-Min1, XU Wen-Cheng2, QIU Dong-Lai1, ZHANG Qin-Yuan1, JIANG Zhong-Hong1 |
| 1Key Laboratory of Specially Functional Materials of Ministry of Education, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 5106402Laboratory of Photonic Information Technology, School of Information and Photoelectric Science and Engineering, South China Normal University, Guangzhou 510006 |
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XU Shan-Hui, YANG Zhong-Min, XU Wen-Cheng et al 2009 Chin. Phys. Lett. 26 014203 |
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Abstract We experimentally investigate the laser characteristics of a series of short pieces of newly-developed Er3+/Yb3+ codoped single mode phosphate glass fibres via the cladding pump of a 976nm multimode laser diode. A stable
continuous-wave single transverse mode laser with over 85mW at 1553nm is generated from a 5.5-cm-long active fibre. Single mode laser output power per unit length is up to 15mW/cm. Moreover, the slope efficiency is 11.8% when the pump power is below 940mW and the 3dB linewidth is 0.06nm at the maximum pump power. The numerical simulation results show that the laser emission slope efficiency can exceed 20% by means of increasing the coupling efficiency of the pump to the fibre core further.
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| Keywords:
42.70.Ce
42.79.-e
42.55.Wd
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Received: 10 October 2008
Published: 24 December 2008
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