Results 81 to 90 of about 17,193 (239)

Brillouin Dynamic Gratings—A Practical Form of Brillouin Enhanced Four Wave Mixing in Waveguides: The First Decade and Beyond

open access: yesSensors, 2018
Brillouin-Enhanced Four-Wave-Mixing techniques, which couple four optical beams through Brillouin nonlinearity, have gained popularity in the 1980’s largely owing to their phase conjugation properties.
Arik Bergman, Moshe Tur
doaj   +1 more source

Self-ordering and cavity cooling using a train of ultrashort pulses

open access: yesNew Journal of Physics, 2020
A dilute atomic gas in an optical resonator exhibits a phase transition from a homogeneous density to crystalline order when laser illuminated orthogonal to the resonator axis.
Valentin Torggler   +3 more
doaj   +1 more source

Constraining modified gravity with quantum optomechanics

open access: yesNew Journal of Physics, 2022
We derive the best possible bounds that can be placed on Yukawa- and chameleon-like modifications to the Newtonian gravitational potential with a cavity optomechanical quantum sensor.
Sofia Qvarfort   +2 more
doaj   +1 more source

Enhancement and Speed‐Up of Carrier Dynamics in A Dielectric Nanocavity with Deep Sub‐Wavelength Confinement

open access: yesLaser &Photonics Reviews, EarlyView.
This work presents the first experimental investigation of ultrafast dynamics in dielectric bowtie nanocavities, featuring deep‐subwavelength mode confinement. Measurements reveal enhanced two‐photon absorption, sub‐picosecond carrier relaxation, and strong pump–probe interactions, demonstrating clear advantages over conventional nanocavities for low ...
Gaoneng Dong   +6 more
wiley   +1 more source

Diamond-integrated optomechanical circuits [PDF]

open access: yesNature Communications, 2013
Diamond offers unique material advantages for the realization of micro- and nanomechanical resonators due to its high Young's modulus, compatibility with harsh environments and superior thermal properties. At the same time, the wide electronic bandgap of 5.45eV makes diamond a suitable material for integrated optics because of broadband transparency ...
Rath, P.   +4 more
openaire   +4 more sources

Light-matter interactions in multi-element resonators

open access: yes, 2017
We investigate structural resonances in multi-element optical resonators and provide a roadmap for the description of the interaction of single extended cavity modes with quantum emitters or mechanical resonators.
Dantan, Aurélien, Genes, Claudiu
core   +1 more source

Amplification of Light‐Ultrasound Interaction in a Pi‐Shifted Fiber Bragg Grating for Enhanced Ultrasonic Sensitivity

open access: yesLaser &Photonics Reviews, EarlyView.
By precisely engineering the geometry of a fiber‐based optical resonator, the interaction between confined light and external ultrasound waves is significantly amplified without sacrificing light confinement, boosting the ultrasound detection sensitivity beyond 0.5 mPa/√Hz.
Tai‐Anh La   +2 more
wiley   +1 more source

Optomechanical trampoline resonators

open access: yesOptics Express, 2011
We report on the development of optomechanical "trampoline" resonators composed of a tiny SiO(2)/Ta(2)O(5) dielectric mirror on a silicon nitride micro-resonator. We observe optical finesses of up to 4 × 10(4) and mechanical quality factors as high as 9 × 10(5) in relatively massive (~100 ng) and low frequency (10-200 kHz) devices.
Kleckner, D.   +5 more
openaire   +3 more sources

Ultrafast optomechanical pulse picking [PDF]

open access: yesApplied Physics B, 2017
Abstract State-of-the-art optical switches for coupling pulses into and/or out of resonators are based on either the electro-optic or the acousto-optic effect in transmissive elements. In high-power applications, the damage threshold and other nonlinear and thermal effects in these elements impede further improvements in pulse energy ...
Nikolai Lilienfein   +2 more
openaire   +3 more sources

Theory of optomechanics: Oscillator-field model of moving mirrors

open access: yes, 2012
In this paper we present a model for the kinematics and dynamics of optomechanics which describe the coupling between an optical field, here modeled by a massless scalar field, and the internal (e.g., determining its reflectivity) and mechanical (e.g ...
B. L. Hu   +13 more
core   +2 more sources

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