Design and fabrication of subwavelength antireflective microstructures on diamond surfaces

IF 2.2 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2024-11-16 DOI:10.1016/j.optcom.2024.131316

Youwang Hu , Shoutao Chen , Dejian Kong , Mingyang Yang , Xiaoyan Sun , Ji'an Duan

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Abstract

In this study, subwavelength microstructures on diamond have been investigated numerically and experimentally to attain high transmittance over a broad bandwidth in the mid-infrared(MIR) wavelength range of 8∼14 μm.A simulation model was established using FDTD software to theoretically investigate the influence of changes in microstructure parameters on the transmittance enhancement performance, and the relationship between microstructure parameters and transmittance was macroscopically demonstrated based on infrared spectral value distribution diagrams. Fabrication of square frustum microstructure arrays on diamond surfaces by airflow-assisted femtosecond laser in an air environment. The structure was created on a single work surface. The fabricated samples achieved full-wavelength transmittance enhancement in the MIR band from 8 μm to 14 μm, and the average transmittance was increased from 70.0% to 77.5%, of which the transmittance at 9 μm wavelength was increased by 8.3%. The experimental results illustrate that the fabricated microstructures have good transmittance enhancement performance.

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在金刚石表面设计和制造亚波长抗反射微结构

该研究利用 FDTD 软件建立了一个仿真模型，从理论上研究了微结构参数变化对透射率增强性能的影响，并根据红外光谱值分布图从宏观上证明了微结构参数与透射率之间的关系。在空气环境下，利用气流辅助飞秒激光在金刚石表面制作方形簇状微结构阵列。该结构是在单个工作面上制作的。制作的样品在 8 μm 至 14 μm 的中红外波段实现了全波长透射率增强，平均透射率从 70.0% 提高到 77.5%，其中 9 μm 波长的透射率提高了 8.3%。实验结果表明，制作的微结构具有良好的透射率增强性能。

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

Optics Communications 物理-光学

CiteScore

5.10

自引率

8.30%

发文量

681

审稿时长

38 days

期刊介绍： Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.