自旋轨道相互作用介导的表面手性测量。

IF 3.3 2区物理与天体物理 Q2 OPTICS

Optics letters Pub Date : 2024-12-15 DOI:10.1364/OL.543177

Upasana Baishya, Nirmal K Viswanathan

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引用次数: 0

摘要

聚焦反射光束中的自旋轨道（σ - l）相互作用由于正交场分量的叠加和与偏振相关的界面反射系数而导致光束截面的空间非均匀极化。对于输入高斯光束的σ =±1圆偏振，极化滤波后的输出光束可导致l= + - 2电荷漩涡转化为两个（+）单位电荷漩涡。这种变换遵循一个轨迹，称为光学涡旋轨迹，它取决于输入光束的σ，因此取决于l和反射表面的特性。涡流轨迹在这里被用来量化石英晶体的手性参数的符号和大小。基于琼斯矩阵的模拟预测了与实验测量相匹配的手性相关的漩涡轨迹。

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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Spin-orbit interaction-mediated measurement of surface chirality.

The spin-orbit (σ - l) interaction in a focused-reflected beam of light results in spatially nonuniform polarization in the beam cross section due to the superposition of orthogonal field components and polarization-dependent interface reflection coefficients. Polarization filtering the output beam leads to an interchangeable transformation of l=∓2 charge vortex into two (∓) unit charge vortices, for σ = ±1 circular polarization of the input Gaussian beam. This transformation follows a trajectory, named optical vortex trajectory, that depends on the input beam's σ and hence the l and reflecting surface characteristics. The vortex trajectory is used here to quantify both the sign and the magnitude of the chiral parameter of a quartz crystal. The Jones matrix-based simulation anticipates the chirality-dependent vortex trajectory that matches with experimental measurements.

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来源期刊

Optics letters 物理-光学

CiteScore

6.60

自引率

8.30%

发文量

2275

审稿时长

1.7 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.