| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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A 60 W Tm:YLF Laser with Triple Tm:YLF Rods |
| ZHU Guo-Li** |
The 27th Research Institute of China Electronics Technology Group Corporation, Zhengzhou 450047
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| Cite this article: |
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ZHU Guo-Li 2015 Chin. Phys. Lett. 32 094207 |
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Abstract A narrow linewidth stable high-power continuous-wave 3.5% Tm3+ doped LiYF4 (Tm:YLF) laser is reported. By using dual F–P etalons and three Tm:YLF rods in a cavity, laser output of ～60 W at 1907.7 nm is obtained with a slope efficiency of 34.8%. The M2 factor is found to be ～2.0 under an output power of 30 W. In addition, the relaxation oscillation and efficiency of the Tm:YLF laser are also studied. The relaxation oscillation of the Tm:YLF laser is improved obviously by setting the ratio of pump beam to oscillating laser beam as ～1.5:1 and the efficiency is increased in comparison with the ratio of ～1.3:1.
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Received: 29 March 2015
Published: 02 October 2015
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