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LD-pumped 6W cw Tm3+-Doped Silica Double-Cladding Fibre Laser |
| DU Ge-Guo;LI Da-Jun;ZHANG Min;YAN Pei-Guang;CHEN Li-Cheng;ZHOU Yao-Hua;RUAN Shuang-Chen |
| Shenzhen Key Laboratory of Laser Engineering, College of Electronic Science and Technology, Shenzhen University, Shenzhen 518060 |
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| Cite this article: |
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DU Ge-Guo, LI Da-Jun, ZHANG Min et al 2008 Chin. Phys. Lett. 25 957-959 |
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Abstract We report a thulium-doped silica fibre laser that generates a maximum cw output power of 6W in a 2μm wavelength range when cladding-pumped by a laser diode (LD) operating at approximately 791nm at room temperature. The
slope efficiency with respect to the launched pump power is 50% and 38.4%, with and without an output coupler mirror, respectively. The corresponding thresholds are 2.8W and 4.8W, respectively. The beam qualities Mx2 and My2 are 1.26 and 1.32, respectively. The experimental results are also analysed.
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| Keywords:
42.55.Wd
42.55.Xi
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Received: 27 May 2007
Published: 27 February 2008
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