Compact low-voltage electro-optic Q-switch made of LiNbO3 | Zendy

Jifang Shang | Zendy; Jinfeng Yang | Zendy; Haoshan Hao | Zendy; Qinglian Li | Zendy; Ling Zhang | Zendy; Jun Sun | Zendy

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Compact low-voltage electro-optic Q-switch made of LiNbO₃

Author(s) -

Jifang Shang,

Jinfeng Yang,

Haoshan Hao,

Qinglian Li,

Ling Zhang,

Jun Sun

Publication year - 2020

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.393958

Subject(s) - pockels effect , lithium niobate , optics , materials science , q switching , voltage , laser , electro optics , crystal (programming language) , optoelectronics , physics , quantum mechanics , computer science , programming language

This work presents a compact LiNbO 3 (lithium niobate, LN) electro-optic (EO) Q-switch with a lower driving voltage than the conventional LN Q-switches. By using non-direct cuts of a certain crystallographic orientation, a LN crystal is used both as a quarter-wave plate (QWP) and a pockels cell in a laser cavity. Through theoretical calculations and experiments, we have determined the optimized crystal orientations with low quarter-wave voltages (QWV). A set of compact LN EO Q-switches were prepared and used successfully in the pulse-on mode in a Nd:YAG laser. The Q-switched laser outputs are comparable to those obtained by using a conventional Z-cut LN Q-switch with a QWP. The QWV of the Q-switch with the optimized crystal orientation is 600V lower than that of the Z-cut LN Q-switch.

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