Results 121 to 130 of about 10,154 (259)

On-chip asymmetric microcavity optomechanics

Optics Express, 2016
High quality factor (Q) optical resonators have enabled rapid growth in the field of cavity-enhanced, radiation pressure-induced optomechanics. However, because research has focused on axisymmetric devices, the observed regenerative excited mechanical modes are similar.
Soheil, Soltani, Alexa W, Hudnut, Andrea M, Armani   +2 more
openaire   +2 more sources

Stimulated Forward Brillouin Scattering in Subwavelength Grating Silicon Membranes

Laser &Photonics Reviews, EarlyView.
This work proposes a novel strategy to achieve large Brillouin scattering with independent control of the optical and mechanical modes using subwavelength silicon membranes. We experimentally demonstrate remarkably high Brillouin gain, resulting in an on/off Stokes gain of 3 dB and anti‐Stokes loss of 4 dB in a 6 mm‐long waveguide with 35 mW of on‐chip
Paula Nuño Ruano, Jianhao Zhang, David González‐Andrade, Daniele Melati, Eric Cassan, Pavel Cheben, Laurent Vivien, Norberto Daniel Lanzillotti‐Kimura, Carlos Alonso‐Ramos   +8 more
wiley   +1 more source

Optically anisotropic planar microcavities [PDF]

, 2018
Die Arbeit untersucht planare optische Mikrokavitäten, welche aus einer beidseitig von Multischichtspiegeln umgebenen Kavitätsschicht bestehen. Im Rahmen einer Transfermatrixbeschreibung für ebene Wellen wird ein genereller Ansatz zur Berechnung von ...
Richter, Steffen
core   +1 more source

Quantization of Polaritons Confined in Dielectric Structures

Laser &Photonics Reviews, EarlyView.
This study addresses the limitations of the Hopfield model of strong light‐matter coupling in the case of structured dieletrics. A method to derive quantum models in the polariton basis using Bogoliubov transformation and third quantization is introduced, demonstrating how to boost interaction strength and engineer nonlocal interactions for strongly ...
Amir Rahmani, Dogyun Ko, Maciej Dems, Andrzej Opala, Michał Matuszewski   +4 more
wiley   +1 more source

Orbital angular momentum conservation in Brillouin light scattering within a ferromagnetic sphere

New Journal of Physics, 2018
Magnetostatic modes supported by a ferromagnetic sphere have been known as the Walker modes, each of which possesses an orbital angular momentum as well as a spin angular momentum along a static magnetic field.
A Osada, A Gloppe, Y Nakamura, K Usami
doaj   +1 more source

MXenes in Next‐Generation Light‐Emitting Diodes: Innovations, Challenges, and Future Prospects

Laser &Photonics Reviews, EarlyView.
This review provides a systematic and critical overview of MXene integration in LEDs from their synthesis strategies and electronic characteristics to their roles as electrodes, interlayers, and emissive materials. It also explores the emerging prospects and challenges for MXene‐enabled flexible, transparent, and intelligent display technologies that ...
Awais Ali, Muhammad Ahsan Saeed, Waqas Ahmad, Hanseok Seo, Junhyeok Park, Seongkeun Oh, Hyung Jin Choi, Muhammad Junaid Sultan, Rana Mujahid, Soong Ju Oh   +9 more
wiley   +1 more source

Revealing the Resonant Physics of Open Photonic Time Crystals

Laser &Photonics Reviews, EarlyView.
ABSTRACT Photonic time crystals (PTCs) are media whose permittivity is modulated periodically in time, enabling momentum bandgaps and parametric amplification of light. Their realization at the nanoscale can revolutionize the study of light‐matter interactions.
Adrià Canós Valero, Sergei Gladyshev, David Globosits, Stefan Rotter, Egor A. Muljarov, Thomas Weiss   +5 more
wiley   +1 more source

Directional Whispering Gallery Mode in Microring Lasers Enabled by Tilted Azimuthal Gratings

Advanced Photonics Research
Whispering gallery mode (WGM) microcavities, which have been extensively studied for their ultrahigh Q factors and small mode volumes, are exceptional platforms for achieving ultralow‐threshold microlasers and functional resonators.
Jinghan Chen, Adrian Abazi, Frederik van Schoonhoven, Yuji Oki, Yohei Yamamoto, Carsten Schuck, Hiroaki Yoshioka   +6 more
doaj   +1 more source

Mixed TiO2–SiO2 thin coatings for selective adsorption and sunlight‐powered photodegradation of cationic pollutants

Responsive Materials, EarlyView.
Environmental pollution and water scarcity demand innovative purification methods. This study presents a sol‐gel approach to fabricate mixed silica–titania thin films joining photocatalytic activity with selective sorption capability. The films exhibit higher surface area, enhanced degradation of cationic and improved performance over bare titania ...
Andrea Lanfranchi, Simone Bertucci, Margherita Peragallo, Fabiano Martorelli, Giovanni Manfredi, Davide Avanzino, Roberto Spotorno, Stefano Alberti, Davide Comoretto, Francesco Di Stasio, Maddalena Patrini, Federico Locardi, Mirko Prato, Paola Lova   +13 more
wiley   +1 more source

Concurrent tunable structural color, luminescence, and afterglow in single ZnS: X@SiO2 spheres via SiO2‐nanoarmor and calcination decoupling collaborative strategy

Smart Molecules, EarlyView.
For the first time, tunable structural color, luminescence, and afterglow are integrated into single ZnS:X@SiO2 spheres via a SiO2‐nanoarmor and calcination decoupling strategy, achieving 250–410 nm monodisperse wurtzite spheres with 91% phase conversion, 12.8% PLQY, and 12.27 s afterglow. Abstract The integration of structural color, photoluminescence,
Tianyi Liu, Rou Meng, Shufen Zhang, Suli Wu   +3 more
wiley   +1 more source