Results 161 to 170 of about 906,607 (253)

Side‐DBR Guided Exciton‐Polariton Lasing With Near‐Field Mode Imaging in an InGaN Thin‐Film Ridge Waveguide

open access: yesLaser &Photonics Reviews, EarlyView.
Room‐temperature lower‐polariton‐like lasing is realized in an InGaN/GaN thin‐film ridge cavity with lateral distributed Bragg reflectors. Near‐field optical microscopy distinguishes the transverse side‐DBR‐confined mode from a longitudinal photon‐like mode, while simulations reproduce their spatial profiles.
Wai Yuen Fu   +2 more
wiley   +1 more source

Heterogeneous Integration of Multi‐Band Mode‐Locked and Single‐Mode Lasers on an Extended Commercial SiN Platform

open access: yesLaser &Photonics Reviews, EarlyView.
Micro‐transfer printing enables GaAs and InP gain materials to be integrated on a commercial silicon nitride photonic platform. The resulting chip supports O‐ and C‐band comb and single‐mode lasers, demonstrating a scalable route toward multi‐material, multi‐wavelength, and multifunctional integrated light sources.
Dongbo Wang   +12 more
wiley   +1 more source

The failure of the Ehlers-Kundt conjecture in the impulsive case. [PDF]

open access: yesGen Relativ Gravit
Frauenberger ML   +2 more
europepmc   +1 more source

Nonlocal Leaky Mode Metasurfaces for Mode‐, Angle‐, and Polarization‐Multiplexed Holography With Thermal Light

open access: yesLaser &Photonics Reviews, EarlyView.
Nonlocal leaky mode metasurfaces reconstruct multiplexed holograms directly from unfiltered thermal light. High‐Q leaky guided modes compress broadband halogen emission into narrowband channels, enhancing temporal coherence a hundredfold, while a single nanohole array encodes independent images addressed by mode, angle, and polarization, establishing ...
Rajat Kumar Sinha, Mo Mojahedi
wiley   +1 more source

Time‐Modulated Optomechanics Reveal Energy Flow and Inelastic Interactions Between Acoustic Phonons in Nanomembranes

open access: yesLaser &Photonics Reviews, EarlyView.
Temporal interfaces are abrupt refractive index changes used in time‐varying optics, but also transitions to nonequilibrium states. This work explores the inelastic scattering of time‐varying light by nonthermal acoustic phonons in the vicinity of temporal interfaces.
Anuj Kumar Dhiman   +10 more
wiley   +1 more source

Integration of III‐V Quantum Dot Photonic Devices on Silicon Nitride via Lithography‐Aligned Micro‐Transfer Printing

open access: yesLaser &Photonics Reviews, EarlyView.
Lithography‐aligned micro‐transfer printing integrates unprocessed InAs/GaAs quantum dot membranes with silicon nitride photonic circuits. Post‐transfer patterning defines quantum dot photonic devices directly on the target chip, enabling precise GaAs–SiNx coupling, purcell‐enhanced single photon emission, and scalable on‐chip routing and correlation ...
Xuebin Peng   +6 more
wiley   +1 more source

Deep Hydrocarbon Cycle

open access: yesGeophysical Monograph Series, Page 329-339., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Vladimir Kutcherov   +3 more
wiley  

+1 more source

Toward Low‐Power Laser Refrigeration ‐ Cooling a Resonant WGM Crystalline Cavity

open access: yesLaser &Photonics Reviews, EarlyView.
Laser refrigeration offers a method to cool solids to low temperatures by using only light. By illuminating bulk crystals doped with rare‐earth ions one can engineer the emitted fluorescent light to be at shorter wavelengths than the pump light ‐ thus extracting heat/phonons from the solid and cooling the crystals.
Jinjin Du   +6 more
wiley   +1 more source

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