Paper
13 December 2021 Measurement of dielectric refractive index based on the spin-orbit Hall effect of light
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Abstract
Due to the spin-orbit Hall effect of light, the intensity distribution of the reflected light is related to the incident angle, spin-orbital angular momentum and the refractive index of the reflective surface. In this paper, we research the spin-orbit Hall effect in the reflection with incident vortex lights carrying spin and orbital angular momentum. Then, the orbital angular momentum (OAM) spectrum of the reflected light are calculated. Subsequently, owing to the fact that the light field is redistributed after reflection, we propose a method for measuring the refractive index of optical materials based on the OAM spectrum of the reflected light. This measurement technique has the advantage of high sensitivity and strong anti-interference ability. We expect this work to contribute to other fields of precise measurements.
© (2021) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jun Yao, Yihua Bai, Haoran Lv, and Yuanjie Yang "Measurement of dielectric refractive index based on the spin-orbit Hall effect of light", Proc. SPIE 12072, 10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Micro- and Nano-Optics, Catenary Optics, and Subwavelength Electromagnetics, 120720O (13 December 2021); https://doi.org/10.1117/12.2604840
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KEYWORDS
Dielectrics

Reflectivity

Interfaces

Refraction

Photons

Spatial frequencies

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