Results 31 to 40 of about 201,674 (321)

Nonlinear optics of photonic hyper-crystals: optical limiting and hyper-computing [PDF]

open access: yesJOSA B 36, 1629-1636 (2019), 2018
Photonic hyper-crystals combine the most interesting features of hyperbolic metamaterials and photonic crystals. Since the dispersion law of extraordinary photons in hyperbolic metamaterials does not exhibit the usual diffraction limit, photonic hyper-crystals exhibit light localization on deep subwavelength scales, leading to considerable enhancement ...
arxiv   +1 more source

Dynamics simulation of photonic crystal fiber end face polishing

open access: yesAdvances in Mechanical Engineering, 2017
The high quality of polished end face of photonic crystal fiber has a significant effect on coupling efficiency when photonic crystal fiber is used to couple with other optical devices. In order to obtain the smooth surface of the photonic crystal fiber,
Zhengqi Zhao   +4 more
doaj   +1 more source

Study of laser actions by bird’s feathers with photonic crystals

open access: yesScientific Reports, 2021
Random lasers had been made by some biomaterials as light scattering materials, but natural photonic crystals have been rarely reported as scattering materials.
Shih-Wen Chen   +6 more
doaj   +1 more source

Metallo-Dielectric Photonic Crystals and Bandgap Blue-Shift [PDF]

open access: yesarXiv, 2021
One of the most appealing aspects of photonic crystal structures is the photonic bandgap created in structures with sufficiently high dielectric contrasts between constituent materials. Understanding how specific photonic crystal structures and their associated stopband positions can selectively interfere with incoming light is vital for implementing ...
arxiv  

Magnetic photonic crystals [PDF]

open access: yesJournal of Physics D: Applied Physics, 2003
In this paper we outline a new direction in the area of photonic crystals (PCs), or photonic band gap materials, i.e. one-, two-, or three-dimensional superstructures with periods that are comparable with the wavelengths of electromagnetic radiation.
Lyubchanskii, I.L.   +4 more
openaire   +2 more sources

Unidirectional transmission in 1D nonlinear photonic crystal based on topological phase reversal by optical nonlinearity

open access: yesAIP Advances, 2017
We propose a scheme of unidirectional transmission in a 1D nonlinear topological photonic crystal based on the topological edge state and three order optical nonlinearity.
Chong Li   +3 more
doaj   +1 more source

Multiple and colorful cone-shaped lasing induced by band-coupling in a 1D dual-periodic photonic crystal

open access: yesAIP Advances, 2013
We demonstrate multiple and colorful cone-shaped lasing from dual-periodic photonic crystal, indicating that coupling occurs between the photonic bands in a photonic crystal laser system.
Cui-Feng Ying   +5 more
doaj   +1 more source

Recent Progress in Photonic Crystal Devices and Their Applications: A Review

open access: yesPhotonics, 2023
The research field of photonic crystals (PhCs) remains active on a global scale. PhCs, which are periodic optical nanostructures with the characteristics of excellent light field confinement and numerous varying degrees of freedom, provide a solid ...
Rahul Kumar Gangwar   +2 more
doaj   +1 more source

Mechanically Tunable Negative-Index Photonic Crystal Lens

open access: yesIEEE Photonics Journal, 2010
We report the microelectromechanical systems (MEMS)-enabled mechanically tunable negative-index photonic crystal lens, which was comprised of 2-D photonic crystal and symmetrical electro-thermal actuators. The 2-D photonic crystal was made of a honeycomb
Y. Cui, V. A. Tamma, J.-B. Lee, W. Park
doaj   +1 more source

Design of Chemically Recyclable Nanocellulose Chiral Liquid Crystal Photonic Elastomer Vitrimer and its Mechanosensitive Colour-changing Materials

open access: yesBioResources, 2023
The development of nanocellulose (CNCs) chiral liquid crystal photonic elastomeric vitrimer materials is promising for achieving needed reduction in carbon emissions (elastomer material recycling) and developing novel photonic functional materials.
Jinlong Zhang, Weiguo Li, Qinglin Wu
doaj   +2 more sources

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