Results 161 to 170 of about 9,494 (293)

Integrated Photonic Modulator Circuit With Programmable Intensity and Phase Modulation Response

open access: yesLaser &Photonics Reviews, EarlyView.
A platform‐agnostic programmable modulation circuit is introduced to enable tunable and universal optimization of integrated photonic modulators. By flexibly controlling carrier amplitude and phase, the approach adapts to diverse device characteristics without structural redesign.
Hong Deng   +3 more
wiley   +1 more source

Brillouin scattering and phonon attenuation in halide glasses: stimulated Brillouin emission

open access: yes, 1987
The results of Brillouin light scattering measurements in bulk halide glasses are described. The Brillouin linewidth, intensities and frequency shift measurements allowed the calculation of phonon attenuation, Pockels' elasto-optic coefficients and ...
Floudas, G. A.   +5 more
core   +1 more source

Polariton-induced transparency in multiple quantum wells probed by time domain Brillouin scattering

open access: yes
The interference of the incident light reflected from the surface of a medium and from a picosecond strain pulse propagating through it results in temporal oscillations of the reflected intensity. This phenomenon, called time-domain Brillouin scattering,
Littmann, Mario   +7 more
core   +1 more source

Lattice Resonances in Periodic Arrays of Time‐Modulated Scatterers

open access: yesLaser &Photonics Reviews, EarlyView.
This work explores how periodic time modulation alters the collective optical behavior of periodic arrays of scatterers, shedding light on the critical role of collective effects in time‐varying photonic systems and unveiling new opportunities for amplification, active control, and nonreciprocal functionalities.
María Blanco de Paz   +3 more
wiley   +1 more source

Broadband Parametric Amplification in AlGaAs‐on‐Insulator Nanowaveguides

open access: yesLaser &Photonics Reviews, EarlyView.
Harnessing the exceptional nonlinearity of AlGaAs‐on‐insulator nanowaveguides, four‐wave‐mixing parametric amplification achieves a record net on‐chip gain of 56 dB and a gain bandwidth exceeding 415 nm at telecom wavelengths. These results establish AlGaAsOI as a powerful platform for compact, high‐performance integrated nonlinear optical ...
Yanjing Zhao   +6 more
wiley   +1 more source

Controlling Collective Quasiparticle Dynamics Beyond Decoherence in Topological Interfaces

open access: yesLaser &Photonics Reviews, EarlyView.
Gold nanoparticles placed above a deformed honeycomb plasmonic crystal couple to a chiral topological interface mode. The pseudospin‐split bands ψ+/ ψ− encode spin‐momentum locking, so emitters radiate directionally along the domain wall and share a common phase.
Fatemeh Davoodi
wiley   +1 more source

Stimulated brillouin scattering in liquids

open access: yes, 1964
Stimulated Brillouin scattering of intense laser light with build-up of coherent hypersonic waves in ...
Garmire, E., Townes, C. H.
core  

Theory of Supercritical Coupling and Generalized Bound States in the Continuum

open access: yesLaser &Photonics Reviews, EarlyView.
We develop a general theory of supercritical coupling and generalized bound states in the continuum (gBICs), revealing how interference between radiative and absorptive channels enables quality factors beyond conventional material‐loss limits. The framework unifies non‐Hermitian mode coupling, causality‐driven reactive interactions, and interference ...
Sergio Balestrieri   +3 more
wiley   +1 more source

Covalent Functionalization of NiFe Layered Double Hydroxides using Tris(Hydroxymethyl)Aminomethane

open access: yesSmall, EarlyView.
Covalent functionalization of NiFe layered double hydroxides with tris(hydroxymethyl)aminomethane enables controlled growth, enhanced structural order, and improved processability. Temporary TRIS anchoring promotes stable water‐based inks and binder‐free electrode fabrication, leading to enhanced oxygen evolution activity and long‐term stability under ...
Alvaro Seijas Da Silva   +8 more
wiley   +1 more source

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