Results 21 to 30 of about 824 (185)

Resonance and Bound States in Photonic Crystal Slabs [PDF]

SIAM Journal on Applied Mathematics, 2003
Summary: Using boundary-integral projections for time-harmonic electromagnetic (EM) fields, and their numerical implementation, we analyze EM resonance in slabs of two-phase dielectric photonic crystal materials. We characterize resonant frequencies by a complex Floquet-Bloch dispersion relation \(\omega = W(\beta)\) defined by the existence of a ...
Stephanos Venakides, Stephen P. Shipman
openaire   +2 more sources

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
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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
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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

Numerical simulation of a novel bilayer photonic crystal slab biosensor with hexagonal lattice

Results in Physics, 2019
A new type of silicon-based bilayer photonic crystal slab biosensor is proposed based on the theoretical investigation of various parameters of two-dimensional photonic crystal slab on the peak wavelength and characteristics of the reflection spectrum ...
Daohan Ge, Jianpei Shi, Yuan Zhang, Liqiang Zhang, Ping Yang   +4 more
doaj   +1 more source

Simultaneous Guidance of Surface Acoustic and Surface Optical Waves in Phoxonic Crystal Slabs

Crystals, 2017
Phoxonic crystals, which exhibit simultaneous phononic and photonic bandgaps, are promising artificial materials for optomechanical and acousto-optical devices.
Tian-Xue Ma, Yue-Sheng Wang, Chuanzeng Zhang   +2 more
doaj   +1 more source

Polarization conversion with a photonic crystal slab

Journal of the European Optical Society-Rapid Publications, 2008
We show that a photonic crystal slab can enable efficient polarization conversion. Two mechanisms are identified. The first mechanism relies on the anisotropy of the bulk properties of the metamaterial and is mediated by interferences. The second mechanism is due to the resonant excitation of leaky surface waves at the interface of the photonic crystal.
Laroche, Marine, Marquier, François, Vandenbem, C., Greffet, Jean-Jacques   +3 more
openaire   +6 more sources

Measuring Photonics in Photosynthesis: Combined Micro-Fourier Image Spectroscopy and Pulse Amplitude Modulated Chlorophyll Fluorimetry at the Micrometre-Scale

Biomimetics, 2022
Natural photonic structures are common across the biological kingdoms, serving a diversity of functionalities. The study of implications of photonic structures in plants and other phototrophic organisms is still hampered by missing methodologies for ...
William P. Wardley, Johannes W. Goessling, Martin Lopez-Garcia   +2 more
doaj   +1 more source