Results 41 to 50 of about 438,669 (294)

Exceptional Electro‐Optic Coefficient Unlocked via Polarization Swaying in KNbO3 Thin Films

Advanced Functional Materials, EarlyView.
We present the largest reported electro‐optic response in any material to date, guided by a new design principle that exploits ultralow coercive field polarization swaying enabled by low‐symmetry ferroelectric phases in monoclinic KNbO3 thin films for energy‐efficient classical and quantum photonic integrated circuits. ABSTRACT The electro‐optic effect
Sankalpa Hazra, Aiden Ross, Brynn Brower, Tobias Schwaigert, Ian Reed Philippi, Albert Suceava, Himirkanti Sarkar, Muhammed Aminul Haque Chowdhury, Suchismita Sarker, Darrell G. Schlom, Long‐Qing Chen, Venkatraman Gopalan   +11 more
wiley   +1 more source

Electromagnetic modelling of dielectric-filled waveguide antenna filter arrays

, 2013
This paper presents electromagnetic simulation of dielectric-filled rectangular waveguide antenna filter arrays. Arrays of microstrip rectangular patch antennas are endwall coupled with waveguide feeds that incorporate E-planes filters via slots in the ...
Budimir, D., Jankovic, U., Mohottige, N., Petrovic, V.   +3 more
core   +1 more source

Diode-pumped garnet crystal waveguide structures fabricated by pulsed laser deposition [PDF]

, 2006
We report progress with diode-pumping of garnet crystal waveguide structures fabricated by PLD. Lasing has been achieved in a single-layer Nd:GGG film, and a four-layer structure with a Nd:GSGG core is currently undergoing laser ...
Shepherd, D.P., J. I. Mackenzie, D. P. Shepherd, J. Wang, May-Smith, T.C., T. C. May-Smith, R. W. Eason, Mackenzie, J.I., Wang, J., Eason, R.W.   +9 more
core   +1 more source

Role of the Recombination Zone in Organic Light‐Emitting Devices

Advanced Materials, EarlyView.
This review summarizes the critical role of the recombination zone in organic light‐emitting diodes (OLEDs). We highlight that broadening the recombination zone in OLEDs based on emissive layers with balanced charge transport and high photoluminescence quantum yields provides a promising route toward achieving both long operational lifetime and high ...
Yungui Li, Karl Leo
wiley   +1 more source

Calculation of the wave spectra of shielded waveguides with arbitrary dielectric filling using the modified Galerkin method and the partial domain method

Физика волновых процессов и радиотехнические системы, 2020
We consider a method for calculating the natural wave spectra of round and rectangular shielded waveguides with arbitrary dielectric filling, which is a modification of the Galerkin method and based on the representation of the wave fields of the guiding
S.A. Kapustin, N.A. Novoselova, S.B. Raevskii, A.A. Titarenko   +3 more
doaj   +1 more source

Rotated Half-Mode Substrate Integrated Waveguide and other Planar Integrated Structures [PDF]

, 2015
High data rate communication channels are becoming more and more integrated into our increasingly technological society. Substrate Integrated Waveguides (SIW) are one planar solution available to the microwave engineer, offering a low-loss and low ...
Farrall, Andrew J
core  

Q-factor and waveguide-sphere separation effects in waveguide-coupled microsphere resonators

, 2008
Quality-factors of waveguide coupled microsphere resonators of 30µm diameter are measured. A Teflon buffer layer is deposited on the waveguide to separate the microsphere from the waveguide and the effect of this separation on the measured quality-factor
Panitchob, Y., Murugan, G.S., Wilkinson, J.S., Zervas, M.N., G. Senthil Murugan, J. S. Wilkinson, M. N. Zervas, Y. Panitchob   +7 more
core   +1 more source

THz waveguide and bends based on metallic photonic crystals [PDF]

, 2009
Metallic band-gap structures for THz waveguide and bends have been simulated using the finite element method.
E. Degirmenci, Surre, Frederic, Degirmenci, Elif, Landais, Pascal, F. Surre, P. Landais   +5 more
core   +1 more source

Transparent Perovskite Light‐Emitting Diodes with Conductive Oxide Top Electrodes

Advanced Materials, EarlyView.
Transparent perovskite light‐emitting diodes (TrPeLEDs) enable simultaneous display and transparency, expanding application possibilities. Using a metal oxide buffer layer and pulsed laser deposition, TrPeLEDs with diverse compositions and architectures are demonstrated.
Michele Forzatti, Sergio Martínez‐Saiz, Morena Cervino, Edoardo Stanzani, Sandra Jenatsch, Qingsen Zeng, Joo Sung Kim, Dong‐Hyeok Kim, Eojin Yoon, Tae‐Woo Lee, Daniel Tordera, Henk J. Bolink   +11 more
wiley   +1 more source

Solution to the Eigenvalue Problem of Rectangular Waveguides with Partial Dielectric Filling by Fourier Transform

Известия высших учебных заведений России: Радиоэлектроника
Introduction. Modern computer simulation tools can be used to analyze complex waveguide structures channeling electromagnetic energy. In order to verify the obtained calculation results, they should be compared with a known "exact" value followed by ...
I. G. Mironenko, S. S. Sokolov, A. A. Ivanov   +2 more
doaj   +1 more source