Back-focal plane scanning spectroscopy for investigating the optical dispersion of large-area two-dimensional photonic crystal fabricated by capillary force lithography

IF 2.4 4区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Current Applied Physics Pub Date : 2024-06-08 DOI:10.1016/j.cap.2024.06.001

Changwon Seo , Jae-Eon Shim , Chanseul Kim , Eunji Lee , Gwan Hyun Choi , Pil Jin Yoo , Gi-Ra Yi , Jeongyong Kim , Teun-Teun Kim

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Abstract

In this article, we introduce our custom-built back-focal plane (BFP) scanning spectroscopy to explore an angle-resolved optical dispersion in two-dimensional (2D) photonic crystal (PhC) constructed with hexagonal lattice of nano-scaled dielectric rods. We fabricated a uniformly large-area photonic crystal measuring 1 cm by 0.5 cm, featuring a polymer-based hexagonal lattice on a gold layer, using capillary force lithography. This precision enables the effective confinement of photonic modes, leading to enhanced optical interactions. We successfully map out the angle-resolved reflectance spectra by directly scanning BFP, revealing the structure's angle dependent optical response and providing insights into its iso-frequency contours. Our approach simplifies the exploration of advanced optical materials, highlighting the role of precise fabrication and measurement techniques in understanding and utilizing the optical properties of structured materials for various technological applications.

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用于研究毛细力光刻法制造的大面积二维光子晶体光色散的背焦平面扫描光谱仪

在这篇文章中，我们介绍了定制的后焦平面（BFP）扫描光谱仪，用于探索二维（2D）光子晶体（PhC）中的角度分辨光色散，该晶体由纳米级电介质棒的六边形晶格构成。我们利用毛细力光刻技术制作了一个 1 厘米 x 0.5 厘米的均匀大面积光子晶体，其特点是在金层上形成了基于聚合物的六边形晶格。这种精确度实现了光子模式的有效约束，从而增强了光学相互作用。通过直接扫描 BFP，我们成功绘制出了角度分辨反射光谱图，揭示了该结构与角度相关的光学响应，并深入了解了其等频轮廓。我们的方法简化了对先进光学材料的探索，凸显了精确制造和测量技术在理解和利用结构材料的光学特性实现各种技术应用方面的作用。

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来源期刊

Current Applied Physics 物理-材料科学：综合

CiteScore

4.80

自引率

0.00%

发文量

213

审稿时长

33 days

期刊介绍： Current Applied Physics (Curr. Appl. Phys.) is a monthly published international journal covering all the fields of applied science investigating the physics of the advanced materials for future applications. Other areas covered: Experimental and theoretical aspects of advanced materials and devices dealing with synthesis or structural chemistry, physical and electronic properties, photonics, engineering applications, and uniquely pertinent measurement or analytical techniques. Current Applied Physics, published since 2001, covers physics, chemistry and materials science, including bio-materials, with their engineering aspects. It is a truly interdisciplinary journal opening a forum for scientists of all related fields, a unique point of the journal discriminating it from other worldwide and/or Pacific Rim applied physics journals. Regular research papers, letters and review articles with contents meeting the scope of the journal will be considered for publication after peer review. The Journal is owned by the Korean Physical Society.