Highly efficient actively Q-switched Nd:YAG laser

Highly efficient actively Q-switched Nd:YAG laser

A novel gain medium structure is designed providing Q-switched pulses with high efficiency. The use of an improved corner-side hybrid pump structure achieves a high absorption efficiency of pump light by crossing through the active media 13 times Nd:YAG. A layer of Sm:YAG is bonded around the active...

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Veröffentlicht in:Optics express 2021-09, Vol.29 (20), p.32325-32332
Hauptverfasser: Zhu, Zhanda, Lv, Shiwei, Zhang, Hanyi, Hui, Yongling, Lei, Hong, Li, Qiang
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container_issue 20
container_start_page 32325
container_title Optics express
container_volume 29
creator Zhu, Zhanda
Lv, Shiwei
Zhang, Hanyi
Hui, Yongling
Lei, Hong
Li, Qiang
description A novel gain medium structure is designed providing Q-switched pulses with high efficiency. The use of an improved corner-side hybrid pump structure achieves a high absorption efficiency of pump light by crossing through the active media 13 times Nd:YAG. A layer of Sm:YAG is bonded around the active media, which suppresses parasitic oscillation and amplified spontaneous emission (ASE) effectively. A high-efficient actively Q-switched laser is successfully realized with a pulse energy of 104 mJ. The corresponding optical-optical conversion efficiency is 30.5%. This is, to the best of our knowledge, the highest optical to optical efficiency for an actively Q-switched Nd:YAG laser at the hundred milli-joules level.
doi_str_mv 10.1364/OE.438414
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title Highly efficient actively Q-switched Nd:YAG laser
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