Resonantly pumped 1645 nm Q-switched Er:YAG laser with a ring cavity

Abstract

This paper report an 1645 nm Er:YAG laser resonantly pumped by an Er-fiber laser operating at 1532 nm. 1.78 W continous wave (CW) output power with a slope efficiency of 52% was obtained using a long ring cavity and an 1 at.% doped Er:YAG crystal,. In Q-switched mode, the obtained pulse energy was 1.6 mJ at a repetition rate of 500 Hz; for 1 kHz repetition rate, 1.2 mJ output energy was obtained.

Keywords

resonantly pumped laser / Er:YAG laser / ring cavity

References

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Acknowledgements

This work was supported by the Doctoral Fund of Ministry of Education of China (No. 20101101110015) and the National Natural Science Foundation of China (Grant Nos. 61178027, 60908009).

RIGHTS & PERMISSIONS

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg