Results 31 to 40 of about 451 (169)

Large electromagnetic field enhancement in plasmonic nanoellipse for tunable spaser based applications

open access: yesPLoS ONE, 2022
We theoretically demonstrated a class of plasmonic coupled elliptical nanostructure for achieving a spaser or a nanolaser with high intensity. The plasmonic ellipse is made up of gold film substrate.
Saqib Jamil   +5 more
doaj   +2 more sources

Design of Surface Plasmon Nanolaser Based on MoS2

open access: yesApplied Sciences, 2018
The paper has proposed a new structure based on MoS2. The electric field distribution, the locality and the loss of the mode, and the threshold under different geometric shapes and parameters are investigated using COMSOL Multiphysics software, based on ...
Litu Xu   +4 more
doaj   +1 more source

Non-obstructive intracellular nanolasers [PDF]

open access: yesNature Communications, 2018
AbstractMolecular dyes, plasmonic nanoparticles and colloidal quantum dots are widely used in biomedical optics. Their operation is usually governed by spontaneous processes, which results in broad spectral features and limited signal-to-noise ratio, thus restricting opportunities for spectral multiplexing and sensing.
Alasdair H. Fikouras   +6 more
openaire   +5 more sources

Zero Crosstalk Regime Direct Modulation of Mutually Coupled Nanolasers

open access: yesIEEE Photonics Journal, 2017
The modulation properties of dually modulated mutually coupled nanolasers have been analysed using rate equations which include the Purcell cavity-enhanced spontaneous emission factor F and the spontaneous emission coupling factor β.
Hong Han, K. Alan Shore
doaj   +1 more source

Cloaking a nanolaser

open access: yes, 2021
Light emitters are bound to strongly interact with light through enhanced absorption and scattering, which imposes limitations on the design and performance of photonic devices such as solar cells, nanoantennas, and (nano) lasers. Overcoming these limitations forces the use of ineffective nonreciprocity approaches or separation of radiation and ...
Lepeshov, Sergey   +2 more
openaire   +2 more sources

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

Rolling‐Enabled Nonplanar Heterogeneous Integration for Polarization‐Diverse Nanolasers on Silicon Photonics [PDF]

open access: yesNanophotonics
Rolling‐enabled transfer printing introduces mechanical orientation as a new degree of freedom for heterogeneous silicon photonics. A conventional TE‐like photonic‐crystal nanobeam laser is mechanically rotated by 90° to selectively couple with the TM‐like mode of a silicon waveguide, enabling polarization‐diverse functionality without redesigning the ...
Park B   +8 more
europepmc   +2 more sources

Arbitrary Wavefront Manipulation in Real Space and Momentum Space Based on Elliptical Structures

open access: yesNanophotonics, Volume 15, Issue 19, 13 October 2026.
Leveraging elliptical structures—while preserving real space arbitrary wavefront manipulation—we generalize the manipulation to momentum space rather than only sustaining topological singularities. Multifunctional integrated outputs, such as beam deflection and focusing, can be flexibly achieved in the near–infrared communication band, and the ...
Siqi Chang   +4 more
wiley   +1 more source

Perovskite nanowire lasers on low-refractive-index conductive substrate for high-Q and low-threshold operation

open access: yesNanophotonics, 2020
Over the last five years, inorganic lead halide perovskite nanowires have emerged as prospective candidates to supersede standard semiconductor analogs in advanced photonic designs and optoelectronic devices.
Markina Daria I.   +10 more
doaj   +1 more source

A Low-Threshold Miniaturized Plasmonic Nanowire Laser with High-Reflectivity Metal Mirrors

open access: yesNanomaterials, 2020
A reflectivity-enhanced hybrid plasmonic GaAs/AlGaAs core-shell nanowire laser is proposed and studied by 3D finite-difference time-domain simulations.
Jiahui Zheng   +6 more
doaj   +1 more source

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