| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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150-W Tm3+-Doped Fiber Lasers With Different Cooling Techniques and Output Couplings |
| TANG Yu-Long1, XU Jian-Qiu1,2, CHEN Wei3,4, LI Shi-Yu4 |
1Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
2Department of Physics, Shanghai Jiaotong University, Shanghai 200240
3State Key Lab of Optical Communication Technology and Networks, Wuhan 430074
4Fiberhome Telecommunication Tech. Co. Ltd, Wuhan 430074
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| Cite this article: |
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TANG Yu-Long, XU Jian-Qiu, CHEN Wei et al 2010 Chin. Phys. Lett. 27 104207 |
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Abstract A home-made double-clad Tm3+−doped silica fiber laser with over 150-W output power is reported. Pumped with a diode bar at 793 nm, the fiber laser is operated at 2.04 μm with a slope efficiency of 56.3%. A quantum efficiency of >140% is achieved owing to the efficient cross−relaxation process in heavily Tm3+-doped fibers. By using different fiber-cooling techniques, the slope efficiency shows a deviation over 10%. The influence of output coupling on the laser characteristics is also investigated.
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| Keywords:
42.55.Wd
42.55.Xi
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Received: 04 March 2010
Published: 26 September 2010
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