ε-近零纳腔中的尖端增强拉曼散射

IF 0.8 4区物理与天体物理 Q4 OPTICS

Optics and Spectroscopy Pub Date : 2024-09-11 DOI:10.1134/S0030400X24040064

A. R. Gazizov, M. Kh. Salakhov

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引用次数: 0

摘要

摘要由于需要将电磁能定位在 1 纳米大小的金属间隙中，分子光机械效应的观测变得复杂。我们建议使用具有ε近零介质的纳米腔，这样光机械耦合所需的条件就不那么严格了。在这项工作中，我们模拟了拉曼散射的增强取决于材料的介电常数和纳米粒子近场的极化。结果表明，当介电常数的实部接近于零时，拉曼散射会出现额外的增强。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Tip-Enhanced Raman Scattering in Epsilon-Near-Zero Nanocavity

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Tip-Enhanced Raman Scattering in Epsilon-Near-Zero Nanocavity

Observation of molecular optomechanical effects is complicated by the need to localize electromagnetic energy in metal gaps about 1 nm in size. We propose to use a nanocavity with an epsilon-near-zero medium so that the conditions required for optomechanical coupling are less stringent. In this work, we simulate the enhancement of Raman scattering depending on the permittivity of the material and the polarization of the near field of the nanoparticle. It is shown that when the real part of dielectric permittivity close to zero, Raman scattering demonstrates an additional enhancement.

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来源期刊

Optics and Spectroscopy 物理-光谱学

CiteScore

1.60

自引率

0.00%

发文量

审稿时长

4.5 months

期刊介绍： Optics and Spectroscopy (Optika i spektroskopiya), founded in 1956, presents original and review papers in various fields of modern optics and spectroscopy in the entire wavelength range from radio waves to X-rays. Topics covered include problems of theoretical and experimental spectroscopy of atoms, molecules, and condensed state, lasers and the interaction of laser radiation with matter, physical and geometrical optics, holography, and physical principles of optical instrument making.