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Lasing Characteristics of Tm3+:Ho3+ Codoped Silica Fibre Laser Pumped by 1.18-μm Raman Fibre Laser |
| DONG Shu-Fu1,2;CHEN Guo-Fu1;WANG Xian-Hua1;ZHAO Shang-Hong2 |
| 1State Key Laboratory of Transient Optics Technology, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710068
2Telecommunication Engineering Institute, Air Force Engineering University, Xi’an 710077 |
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| Cite this article: |
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DONG Shu-Fu, CHEN Guo-Fu, WANG Xian-Hua et al 2004 Chin. Phys. Lett. 21 2179-2181 |
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Abstract The fundamental characteristics of Fabry--Perot-cavity continuous-wave Tm--Ho codoped silica fibre lasers pumped by a 1.18 μm Raman fibre laser are presented. A maximum output power of 930 mW at 1880nm is generated for a fibre length of 1 m from the transition of Tm3+, with a slope efficiency of 32.4%. For a 3-m-long fibre, the maximum output power decreases to 650 mW at 1960 nm due to the laser emission from Ho3+ with a lower slope efficiency of 25%, which clearly shows the effective energy transfer from Tm3+ to Ho3+. The wavelength red-shifting of the laser emission originates from the transition competition and the emission cross section difference between Tm3+ and Ho3+.
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| Keywords:
42.55.Wd
42.60.Da
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Published: 01 November 2004
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| PACS: |
42.55.Wd
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(Fiber lasers)
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42.60.Da
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(Resonators, cavities, amplifiers, arrays, and rings)
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