首页|Surface phonon resonance:A new mechanism for enhancing photonic spin Hall effect and refractive index sensor

Surface phonon resonance:A new mechanism for enhancing photonic spin Hall effect and refractive index sensor

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Metal-based surface plasmon resonance(SPR)plays an important role in enhancing the photonic spin Hall effect(SHE)and developing sensitive optical sensors.However,the very large negative permittivities of metals limit their appli-cations beyond the near-infrared regime.In this work,we theoretically present a new mechanism to enhance the photonic SHE by taking advantage of SiC-supported surface phonon resonance(SPhR)in the mid-infrared regime.The transverse displacement of photonic SHE is very sensitive to the wavelength of incident light and the thickness of SiC layer.Un-der the optimal parameter setup,the calculated largest transverse displacement of SiC-based SPhR structure reaches up to 163.8 μm,which is much larger than the condition of SPR.Moreover,an NO2 gas sensor based on the SPhR-enhanced pho-tonic SHE is theoretically proposed with the superior sensing performance.Both the intensity and angle sensitivity of this sensor can be effectively manipulated by varying the damping rate of SiC.The results may provide a promising paradigm to enhance the photonic SHE in the mid-infrared region and open up new opportunity of highly sensitive refractive index sensors.

photonic spin Hall effectrefractive index sensorsurface phonon resonanceSiC

程杰、汪承龙、李一铭、张亚林、刘胜利、董鹏

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School of Science,Jiangsu Province Engineering Research Center of Low Dimensional Physics and New Energy,Nanjing University of Posts and Telecommunications,Nanjing 210023,China

College of Electronic and Optical Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210023,China

School of Electrical Engineering,Research Center of Intelligent Sensor and Network Engineering Technology of Jiangsu Province,Nanjing Vocational University of Industry Technology,Nanjing 210023,China

National Natural Science Foundation of ChinaNatural science Foundation of Nanjing Vocational University of Industry TechnologyQing Lan Project of Jiangsu ProvinceNatural Science Foundation of Jiangsu Province of ChinaFund from the Research Center of Industrial Perception and Intelligent Manufacturing Equipment Engineering of Jiangsu Provin

12175107YK22-02-08BK20230347ZK21-05-09

2024

10.1088/1674-1056/ad4a3c

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(8)