Growth of a large-aperture mid-infrared nonlinear optical La3Nb0.5Ga5.5O14 crystal for optical parametric chirped-pulse amplification

Yuzhou Wang; Fei Liang; Jiyang Wang; Dazhi Lu; Haohai Yu; Huaijin Zhang

doi:10.1039/D1CE00919B

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Growth of a large-aperture mid-infrared nonlinear optical La₃Nb_0.5Ga_5.5O₁₄ crystal for optical parametric chirped-pulse amplification†

Yuzhou Wang,^a Fei Liang,^a Jiyang Wang,^a Dazhi Lu,

*^a Haohai Yu*^a and Huaijin Zhang^a

Author affiliations

* Corresponding authors

^a State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, China
E-mail: dazhi.lu@sdu.edu.cn

Abstract

The optical parametric chirped-pulse amplification (OPCPA) technique is the key for achieving ultrahigh peak power lasers, whose development is hindered by the rare large aperture mid-infrared nonlinear crystals with high damage thresholds. Here, we present the growth and characterization of a La₃Nb_0.5Ga_5.5O₁₄ (LGN) crystal with a diameter up to 60 mm and high optical quality. Its broadband transparency up to 7.4 μm is attributed to the suppression of the second-order infrared absorption. This work not only provides a promising candidate for the mid-infrared OPCPA system, but also offers a new thought of properly designing nonlinear optical crystals from the perspective of structural properties.

This article is part of the themed collection: Crystal Growth

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Article information

DOI: https://doi.org/10.1039/D1CE00919B
Article type: Paper
Submitted: 13 Jul 2021
Accepted: 17 Aug 2021
First published: 17 Aug 2021

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CrystEngComm, 2021,23, 7212-7218

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Growth of a large-aperture mid-infrared nonlinear optical La₃Nb_0.5Ga_5.5O₁₄ crystal for optical parametric chirped-pulse amplification

Y. Wang, F. Liang, J. Wang, D. Lu, H. Yu and H. Zhang, CrystEngComm, 2021, 23, 7212 DOI: 10.1039/D1CE00919B

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