Highly efficient actively Q-switched Nd:YAG laser | Zendy

Zhanda Zhu | Zendy; Shiwei Lv | Zendy; Hanyi Zhang | Zendy; Yongling Hui | Zendy; Hong Lei | Zendy; Qiang Li | Zendy

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Highly efficient actively Q-switched Nd:YAG laser

Author(s) -

Zhanda Zhu,

Shiwei Lv,

Hanyi Zhang,

Yongling Hui,

Hong Lei,

Qiang Li

Publication year - 2021

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.438414

Subject(s) - optics , materials science , laser , amplified spontaneous emission , q switching , energy conversion efficiency , optoelectronics , slope efficiency , fiber laser , physics

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.

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