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Keywords = mesotroinics

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10 pages, 7460 KB  
Communication
Photonic Hook with Modulated Bending Angle Formed by Using Triangular Mesoscale Janus Prisms
by Wei-Yu Chen, Cheng-Yang Liu, Yu-Kai Hsieh, Oleg V. Minin and Igor V. Minin
Photonics 2022, 9(12), 948; https://doi.org/10.3390/photonics9120948 - 8 Dec 2022
Cited by 2 | Viewed by 2106
Abstract
In this study, we propose a novel design of triangular mesoscale Janus prisms for the generation of the long photonic hook. Numerical simulations based on the finite-difference time-domain method are used to examine the formation mechanism of the photonic hook. The electric intensity [...] Read more.
In this study, we propose a novel design of triangular mesoscale Janus prisms for the generation of the long photonic hook. Numerical simulations based on the finite-difference time-domain method are used to examine the formation mechanism of the photonic hook. The electric intensity distributions near the micro-prisms are calculated for operation at different refractive indices and spaces of the two triangular micro-prisms. The asymmetric vortices of intensity distributions result in a long photonic hook with a large bending angle. The length and the bending angle of the photonic hook are efficiently modulated by changing the space between the two triangular micro-prisms. Moreover, the narrow width of the photonic hook is achieved beyond the diffraction limit. The triangular Janus micro-prisms have high potential for practical applications in optical tweezers, nanoparticle sorting and manipulation and photonic circuits. Full article
(This article belongs to the Special Issue Recent Advances in Optical Diffraction and Imaging)
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