Segmented circular LD arrays side-pumped a Nd:YAG laser rod |
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| Authors: | W Wang M L Gong Q Zhao Z Y Hu and C Fu |
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| Institution: | 1.Stale Key Laboratory of Tribology, Center for Photonics and Electronics, Department of Precision Instruments and Mechanology,Tsinghua University,Beijing,China |
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| Abstract: | We design a Nd:YAG module with symmetrical LD side-pumped structure in a periodical arrangement between circular LD arrays
and holders. This novel design has great potential to be used in compact and miniature laser systems. Design optimization
and simulation on thermal effects have been performed. An experiment has also been carried out. The experiment results indicate
the all-solid-state laser with the-Nd:YAG module can stably operate in the range of 10–30 Hz with no controlling temperature
by TE cooler. The laser beam had a divergence angle less than 3.8 mrad and a maximum output pulse of 174 mJ has been obtained
at the pump current of 50 A and working frequency of 23 Hz, corresponding to optical-optical conversion efficiency of 40.2%. |
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