Results 51 to 60 of about 595 (151)

Carrier Transport in Electrically‐Driven Photonic Crystal Membrane Lasers

open access: yesLaser &Photonics Reviews, Volume 20, Issue 5, 6 March 2026.
A model to study carrier transport in photonic crystal lasers with a buried heterostructure active region and a lateral current injection scheme is presented. The model identifies unconventional leakage paths which explain low injection efficiencies and enhanced recombination at the p‐doping interface observed experimentally.
Mathias Marchal   +7 more
wiley   +1 more source

Polarized Stimulated Emission of 2D Ensembles of Plasmonic Nanolasers

open access: yesAdvanced Photonics Research, 2021
Plasmonic nanolasers produce coherent light with wavelengths on a scale similar to their own or larger. In the past decade they have attracted intense interest, particularly from the emerging areas of integrated photonic circuits and biomedicine. Despite
Nikita Toropov   +4 more
doaj   +1 more source

Dynamics of Electrically Pumped Semiconductor Nano-Laser Arrays

open access: yesPhotonics, 2023
Semiconductor nano-lasers have been actively investigated both theoretically and experimentally with to the aim of providing a highly compact laser amenable to photonic integration.
Yuanlong Fan   +2 more
doaj   +1 more source

Engineering Grain Architecture in Epitaxial Aluminum on Miscut Substrates Toward Various Clean Limits and Giant Superconductivity Modulation

open access: yesSmall, Volume 22, Issue 14, 6 March 2026.
The miscut substrate strategy offers a novel means to engineer aluminum surface roughness, grain architecture, crystallinity, and both normal and superconducting transport properties toward their clean limits by precisely tuning the miscut angle without altering growth conditions.
Thi‐Hien Do   +13 more
wiley   +1 more source

Dipole nanolaser

open access: yesPhysical Review A, 2005
A "dipole" laser is proposed consisting of a nanoparticle and a two-level system with population inversion. If the threshold conditions are fulfilled, the dipole interaction between the two-level system and the nanoparticle leads to coherent oscillations in the polarization of the particles, even in the absence of an external electromagnetic field. The
I. E. Protsenko   +4 more
openaire   +3 more sources

Accelerating Luminescence in Nanostructures: Exploring the Physical Limits and Impact of Ultrafast Emission in Nanoscale Materials

open access: yesAdvanced Photonics Research, Volume 7, Issue 2, February 2026.
This review highlights recent advances in accelerating luminescence in nanostructures through cooperative emission, resonator coupling, and nonlocal light–matter interactions. By unifying concepts such as excitonic superradiance, superfluorescence, and the plasmonic Purcell effect, it reveals physical limits of ultrafast emission and their potential ...
Masaaki Ashida   +3 more
wiley   +1 more source

Perfect Nonradiating Modes in Dielectric Nanoparticles

open access: yesPhotonics, 2022
A hypothesis of the existence of perfect nonradiating modes in dielectric nanoparticles of an arbitrary shape is put forward. It is strictly mathematically proved that such modes exist in axisymmetric dielectric nanoparticles and have unlimited radiation
Vasily Klimov
doaj   +1 more source

Nanolasers Beat the Diffraction Limit

open access: yesIEEE Photonics Journal, 2010
Recently, a number of groups have reported a dramatic reduction in the minimum size of lasers, achieved via the use of metals to form the laser's resonant cavity.
Martin T. Hill
doaj   +1 more source

Self‐Catalyzed AlGaAs Nanowires and AlGaAs/GaAs Axial Heterostructures Grown by Molecular Beam Epitaxy

open access: yesAdvanced Materials Interfaces, Volume 13, Issue 1, 7 January 2026.
Following the parameter modulation described in the manuscript, a high yield of branch‐free self‐catalyzed AlGaAs nanowires at various nominal Al contents with high material quality has been acquired. These branchless structures are ideal hosts for narrower bandgap GaAs quantum dots, promising for non‐classical light‐emitting applications.
Giorgos Boras   +15 more
wiley   +1 more source

Doping-enhanced radiative efficiency enables lasing in unpassivated GaAs nanowires

open access: yesNature Communications, 2016
Until now, efforts to enhance the performance of nanolasers have focused on reducing the rate of non-radiative recombination. Here, Burgess et al.employ controlled impurity doping to increase the rate of radiative recombination.
Tim Burgess   +11 more
doaj   +1 more source

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