Widely tunable mid-infrared BaGa2GeS6 optical parametric oscillator pumped at 1064 nm by Nd:YAG laser

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2025-10-17 DOI:10.1016/j.optmat.2025.117610

E.Yu. Erushin , S.E. Sere , M.V. Vostrikova , A.A. Boyko , G.S. Shevyrdyaeva , D.V. Badikov , N.Yu. Kostyukova

引用次数: 0

Abstract

We report the first demonstration of an optical parametric oscillator based on the BaGa₂GeS₆ (BGGS) crystal pumped by nanosecond pulses at 1.064 μm. The developed system generated coherent radiation in the mid-infrared range with a tunable idler wavelength spanning from 3.4 μm to 12.5 μm. A maximum idler pulse energy of 0.73 mJ was achieved at 6.5 μm with a pump energy of 15.9 mJ, corresponding to a pump-to-idler conversion efficiency of 4.7 % and a quantum efficiency of 29 %. The tuning behavior showed good agreement with the theoretical Sellmeier predictions above 5 μm, while deviations exceeding 1° were observed below 4.5 μm. These results highlight the BGGS crystal as a promising nonlinear material for broadband tunable mid-IR generation under nanosecond pumping.

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宽可调谐中红外BaGa2GeS6光参量振荡器由Nd:YAG激光泵浦至1064 nm

本文报道了一种基于BaGa2GeS6 （BGGS）晶体的光学参量振荡器的首次演示，该晶体被1.064 μm的纳秒脉冲泵浦。该系统产生中红外相干辐射，空闲波长范围为3.4 ~ 12.5 μm。当泵浦能量为15.9 mJ时，在6.5 μm处获得了最大空闲脉冲能量0.73 mJ，对应于泵-空闲转换效率为4.7%，量子效率为29%。在5 μm以上，调谐行为与理论Sellmeier预测一致，而在4.5 μm以下，偏差超过1°。这些结果表明，BGGS晶体是一种有前途的非线性材料，用于纳秒泵浦下的宽带可调谐中红外产生。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.