利用岛状SERS结构在GaP基板上进行红外范围表面增强非弹性光散射

IF 0.48 Q4 Physics and Astronomy

Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI:10.1134/S1062873824709553

S. M. Makarovskaya, V. V. Solovyev, T. D. Rudakov, I. V. Kukushkin

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引用次数: 0

摘要

作者考虑了由涂有银层的磷化镓（GaP）制成的周期性介电结构的特性。这种结构可以放大表面增强非弹性光散射（SERS）信号。在该结构的不同高度上，信号散射强度与周期有关。比较了二氧化硅和氮化镓基底上的 SERS 结构在 532、785 和 1064 纳米激光激发波长下的信号散射强度。结果发现，带有薄金属层的基于 GaP 的结构在红外线范围内可将信号强度提高七个数量级以上。研究了拉曼增益与沉积层厚度的关系。

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Using Island SERS Structures on GaP Substrates for Surface-Enhanced Inelastic Light Scattering in the Infrared Range

The authors consider the properties of periodic dielectric structures made of gallium phosphide (GaP) coated with layers of silver. Such structures allow signals of surface-enhanced inelastic light scattering (SERS) to be amplified. Period dependences are obtained for the intensities of signal scattering at different heights of the structure. Intensities of signal scattering are compared for SERS structures on SiO₂ and GaP substrates at laser excitation wavelengths of 532, 785, and 1064 nm. GaP-based structures with thin metal layers are found to enhance signals by more than seven orders of magnitude in the infrared range. The dependence of the Raman gain on the thickness of deposited layers is studied.

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来源期刊

Bulletin of the Russian Academy of Sciences: Physics Physics and Astronomy-Physics and Astronomy (all)

CiteScore

0.90

自引率

0.00%

发文量

251

期刊介绍： Bulletin of the Russian Academy of Sciences: Physics is an international peer reviewed journal published with the participation of the Russian Academy of Sciences. It presents full-text articles (regular, letters to the editor, reviews) with the most recent results in miscellaneous fields of physics and astronomy: nuclear physics, cosmic rays, condensed matter physics, plasma physics, optics and photonics, nanotechnologies, solar and astrophysics, physical applications in material sciences, life sciences, etc. Bulletin of the Russian Academy of Sciences: Physics focuses on the most relevant multidisciplinary topics in natural sciences, both fundamental and applied. Manuscripts can be submitted in Russian and English languages and are subject to peer review. Accepted articles are usually combined in thematic issues on certain topics according to the journal editorial policy. Authors featured in the journal represent renowned scientific laboratories and institutes from different countries, including large international collaborations. There are globally recognized researchers among the authors: Nobel laureates and recipients of other awards, and members of national academies of sciences and international scientific societies.