Results 1 to 10 of about 1,081,560 (171)

Realization of large transmitted optical Goos–Hänchen shifts in photonic crystal slabs [PDF]

Nanophotonics, 2022
In this letter, we demonstrate the existence of large transmitted optical positive and negative Goos–Hänchen shifts in photonic crystal slabs numerically and experimentally.
Du Shihao, Zhang Wenjie, Liu Wenzhe, Zhang Yanbin, Zhao Maoxiong, Shi Lei   +5 more
doaj   +3 more sources

Arbitrarily polarized bound states in the continuum with twisted photonic crystal slabs [PDF]

Light: Science & Applications, 2023
Bilayer twisted photonic crystal slabs enable arbitrarily polarized bound states in continuum (BICs) covering full Poincare sphere.
Haoye Qin, Zengping Su, Mengqi Liu, Yixuan Zeng, Man-Chung Tang, Mengyao Li, Yuzhi Shi, Wei Huang, Cheng-Wei Qiu, Qinghua Song   +9 more
doaj   +2 more sources

Polarization singularities and optical chirality in dielectric metasurfaces [PDF]

EPJ Web of Conferences, 2022
We theoretically study the relation between polarization singularities and optical properties in dielectric metasurfaces, or photonic crystal slabs. We focus on nondegenerate photonic bands leading to symmetry-protected Bound States in a Continuum (BICs).
Andreani Lucio Claudio, Gerace Dario, Minkov Momchil, Zagaglia Luca, Zanotti Simone   +4 more
doaj   +1 more source

Surface Plasmon Resonance sensor based on a D-shaped photonic crystal fiber with a bimetallic layer [PDF]

EPJ Web of Conferences, 2020
The investigation of a D-shaped photonic crystal fiber sensor with a bimetallic layer for operation at the visible and infrared spectra is presented. The bimetallic layer is composed by silver and gold slabs deposited adjacently on the flat face of the ...
Cardoso Markos P., Silva Anderson O., Romeiro Amanda F., Giraldi M. Thereza R., Costa João C.W.A., Santos José. L., Baptista José. M., Guerreiro Ariel   +7 more
doaj   +1 more source

Giant Photonic Spin Hall Effect by Anisotropic Band in Photonic Crystal Slabs

IEEE Photonics Journal, 2022
When a paraxial light beam is reflected from/ transmitted through an optical element with rotation symmetry, a tiny small incident angle can arise wave-vector-varying Pancharatnam-Berry (PB) phases, resulting in high-performance photonic spin Hall
Rongfeng Zhang, Hongwei Yang, Huifeng Chen, Wenguo Zhu, Huadan Zheng, Jianhui Yu, Yongchun Zhong, Zhe Chen   +7 more
doaj   +1 more source

All-Optical Bistability in Photonic Crystal Slabs with Coupled Cavity-waveguide Structure [PDF]

فیزیک کاربردی ایران, 2021
In this study, we consider a photonic crystal slab with a triangular lattice, which consists of air holes with a circular shape in a tellurium background on top of a Teflon substrate.
Taymaz Fathollahi-khalkhali
doaj   +1 more source

Topologically protected vector edge states and polarization beam splitter by all-dielectric valley photonic crystal slabs

New Journal of Physics, 2021
The polarization beam splitter (PBS) is the essential optical component, which is widely used in various optical instruments. Its robustness against perturbation is very necessary to all-optical classical and quantum networks.
Lu He, Huizhen Zhang, Weixuan Zhang, Yujing Wang, Xiangdong Zhang   +4 more
doaj   +1 more source

Effects of hydrostatic pressure on the photonic band structure and quality factor of an L3 cavity in a photonic crystal slab

Results in Physics, 2020
In this work, we investigate the effects of hydrostatic pressure on the photonic band structure and quality factor of the fundamental mode in an L3 cavity using the guided-mode expansion method in two-dimensional photonic crystal slabs.
Francis Segovia-Chaves, Herbert Vinck-Posada   +1 more
doaj   +1 more source

Pressure Sensing of Symmetric Defect Photonic Crystals Composed of Superconductor and Semiconductor in Low-Temperature Environment

Crystals, 2023
We theoretically investigate the defect mode transmittance of light waves in superconductor–semiconductor photonic crystals and its pressure-sensing dependence.
Haiyang Hu, Xiaoling Chen, Miaomiao Zhao, Liyan Wang, Ming Fang, Dong Zhao   +5 more
doaj   +1 more source

A Novel Method for Band Structure Analysis of Photonic Crystal Slabs

IEEE Photonics Journal, 2011
We propose a new method to extract the modes of photonic crystal slabs and, thus, obtain their band structures. These slabs, which are 2-D periodic structures with finite thickness, can completely confine light and have the important advantage of simple ...
S. A. H. Nekuee, M. Akbari, K. Mehrany
doaj   +1 more source