Results 81 to 90 of about 15,725 (240)

Controllable Optical Bistability and Four-Wave Mixing in a Photonic-Molecule Optomechanics

open access: yesNanoscale Research Letters, 2019
We theoretically investigate the nonlinear optical phenomena including optical bistability and four-wave mixing (FWM) process in a composite photonic-molecule cavity optomechanical system.
Hua-Jun Chen   +5 more
doaj   +1 more source

COUPLING RADIATION LOSS IN THE MIRROR DIELECTRIC DISK RESONATOR. PART 2. MISMATCHED WAVEGUIDE COUPLING [PDF]

open access: yesРадиофизика и электроника, 2015
The coupling radiation loss of the whispering gallery mode mirror dielectric disk resonator (MDDR) with mismatched waveguides was researched. The findings are of particular interest to the developers of MDDR solid-state oscillators where semi-conductor ...
V. V. Glamazdin   +3 more
doaj   +1 more source

Theory of non-Hermitian topological whispering gallery

open access: yesnpj Computational Materials, 2022
Topological insulators have taken the condensed matter physics scenery by storm and captivated the interest among scientists and materials engineers alike.
René Pernas-Salomón   +6 more
doaj   +1 more source

On the dispersion management of fluorite whispering-gallery mode resonators for Kerr optical frequency comb generation in the telecom and mid-infrared range

open access: yes, 2015
Optical whispering gallery mode (WGM) resonators have been very attracting platforms for versatile Kerr frequency comb generations. We report a systematic study on the material dispersion of various optical materials that are capable of supporting ...
Chembo, Yanne K., Lin, Guoping
core   +3 more sources

Narrow Linewidth Spontaneous and Lasing Emissions from Open‐Access Microcavity‐Embedded Perovskite Quantum Dots

open access: yesAdvanced Optical Materials, Volume 14, Issue 1, 9 January 2026.
Continuous‐wave lasing from a small number of perovskite quantum dots is achieved by coupling their photoluminescence to open‐access curved dielectric cavities. This geometry confines their emission into a single optical mode, sharply narrowing linewidths in both spontaneous and lasing regimes.
Sunny Tiwari   +7 more
wiley   +1 more source

Pseudomagnetic Control of Light Waves in the Electrically Tunable Photonic Crystals with Deformation Engineering

open access: yesLaser &Photonics Reviews, Volume 20, Issue 1, 8 January 2026.
This work presents a triaxially deformed photonic crystal cavity on the SOI substrate, enabling the localization and resonating of photons via pseudomagnetic fields. Through coupling with Si waveguides and leveraging the thermo‐optic effect, electrically tunable pseudo‐magnetism‐induced optical resonances can be achieved in the photonic integrated ...
Zhipeng Qi   +9 more
wiley   +1 more source

COUPLING COEFFICIENTS OF DIFFERENT SPHERICAL DIELECTRIC MICRORESONATORS

open access: yesInformation and Telecommunication Sciences, 2018
Background. Nowadays, further increase of processing and transmission speed of information is associated with the development of hybrid integrated circuits, combining electrical and optical components.
Alexander Trubin
doaj   +1 more source

High-Power Directional Emission from Microlasers with Chaotic Resonators

open access: yes, 1998
High-power and highly directional semiconductor cylinder-lasers based on an optical resonator with deformed cross section are reported. In the favorable directions of the far-field, a power increase of up to three orders of magnitude over the ...
Capasso, Federico   +7 more
core   +4 more sources

Low Noise and Drift Reconfigurable Solution‐Processed Chalcogenide Phase Change Metasurfaces

open access: yesSmall Methods, Volume 10, Issue 2, 22 January 2026.
Chalcogenide glasses, favored in reconfigurable optoelectronics, rely on costly ultra‐high vacuum‐based PVD methods. A cost‐effective, solution‐based approach to synthesize these materials, producing high‐quality antimony sulfide films with comparable phase change performance are introduced.
Mahirah Zaini   +7 more
wiley   +1 more source

Radiation characteristics of a double‐layer spherical dielectric lens antenna with a conformal PEC disk fed by on‐axis dipoles

open access: yesIET Microwaves, Antennas & Propagation, 2021
The radiation of a double‐layer spherical dielectric lens equipped with a conformal spherical‐disk PEC reflector and excited by elementary sources located on the antenna axis of rotation is considered. The sources are either a radial electric dipole or a
Maria E. Tikhenko   +3 more
doaj   +1 more source

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