| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Large-Mode-Area Double-Cladding Photonic Crystal Fiber Laser in the Watt Range at 980nm |
| LI Ping-Xue**<\sup>, , ZHANG Xue-Xia, LIU Zhi, CHI Jun-Jie
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Institute of Laser Engineering, Beijing University of Technology, Beijing 100124
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| Cite this article: |
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LI Ping-Xue<\sup>, ZHANG Xue-Xia, LIU Zhi et al 2011 Chin. Phys. Lett. 28 084206 |
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Abstract We report on a quasi-three-level large-mode-area double-clad Yb-doped fiber laser that adopts a linear cavity consisting of a 0° fiber end and a cavity mirror. Two kinds of Yb−doped photonic crystal fiber (PCF) with different inner-clads (170 µm and 200 µm) and absorption coefficients (4.5 dB/m and 3 dB/m) are used as the gain media. By optimizing the structure and elements of the cavity, maximum output powers of 1.24 W and 1.1 W were yielded with optical conversion efficiencies of 7.8% and 6.8% when the fiber lengths were 25 cm and 40 cm with 170 µm and 200 µm inner-claddings, respectively.
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| Keywords:
42.55.Wd
42.55.Ah
42.65.Ky
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Received: 17 February 2011
Published: 28 July 2011
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| PACS: |
42.55.Wd
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(Fiber lasers)
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42.55.Ah
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(General laser theory)
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42.65.Ky
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(Frequency conversion; harmonic generation, including higher-order harmonic generation)
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