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13 December 2021 Measurement of dielectric refractive index based on the spin-orbit Hall effect of light
Jun Yao, Yihua Bai, Haoran Lv, Yuanjie Yang
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Proceedings Volume 12072, 10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Micro- and Nano-Optics, Catenary Optics, and Subwavelength Electromagnetics; 120720O (2021) https://doi.org/10.1117/12.2604840
Event: Tenth International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2021), 2021, Chengdu, China
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.
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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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