Nanolasers enabled by metallic nanoparticles: from spasers to random lasers

Z Wang, X Meng, AV Kildishev… - Laser & Photonics …, 2017 - Wiley Online Library
Owing to exotic optical responses, metallic nanoparticles and nanostructures are finding
broad applications in laser science, leading to numerous design variations of plasmonic …

Mode modification of plasmonic gap resonances induced by strong coupling with molecular excitons

X Chen, YH Chen, J Qin, D Zhao, B Ding, RJ Blaikie… - Nano …, 2017 - ACS Publications
Plasmonic cavities can be used to control the atom-photon coupling process at the
nanoscale, since they provide an ultrahigh density of optical states in an exceptionally small …

Mode volume, energy transfer, and spaser threshold in plasmonic systems with gain

TV Shahbazyan - ACS Photonics, 2017 - ACS Publications
We present a unified approach to describe spasing in plasmonic systems modeled by
quantum emitters interacting with resonant plasmon mode. We show that spaser threshold …

Spasers with retardation and gain saturation: electrodynamic description of fields and optical cross-sections

N Arnold, K Piglmayer, AV Kildishev… - Optical Materials …, 2015 - opg.optica.org
Realistic spasers are numerically modeled within classical electrodynamics scattering
framework using intensity-dependent Lorentzian dielectric function. Quantum mechanical …

Probing plasmonic gap resonances between gold nanorods and a metallic surface

X Chen, Y Yang, YH Chen, M Qiu… - The Journal of …, 2015 - ACS Publications
The plasmonic resonances in individual gold nanorods nanoscopically coupled to a gold
film with different gap spacing have been experimentally and theoretically investigated. The …

Multipolar, time-dynamical model for the loss compensation and lasing of a spherical plasmonic nanoparticle spaser immersed in an active gain medium

A Veltri, A Chipouline, A Aradian - Scientific reports, 2016 - nature.com
The plasmonic response of a metal nanoparticle in the presence of surrounding gain
elements is studied, using a space and time-dependent model, which integrates a quantum …

Hybrid multilayered plasmonic nanostars for coherent random lasing

B Munkhbat, J Ziegler, H Pöhl… - The Journal of …, 2016 - ACS Publications
Here, we report that hybrid multilayered plasmonic nanostars can be universally used as
feedback agents for coherent random lasing in polar or nonpolar solutions containing gain …

Spaser and optical amplification conditions in gold-coated active nanoparticles

N Passarelli, RA Bustos-Marún… - The Journal of Physical …, 2016 - ACS Publications
Due to their many potential applications, there is an increasing interest in studying hybrid
systems composed of optically active media and plasmonic metamaterials. In this work we …

Minimal spaser threshold within electrodynamic framework: Shape, size and modes

N Arnold, C Hrelescu, TA Klar - Annalen der Physik, 2016 - Wiley Online Library
It is known (yet often ignored) from quantum mechanical or energetic considerations, that the
threshold gain of the quasi‐static spaser depends only on the dielectric functions of the …

Coulomb and quenching effects in small nanoparticle-based spasers

VN Pustovit, AM Urbas, AV Chipouline… - Physical Review B, 2016 - APS
We study numerically the effect of mode mixing and direct dipole-dipole interactions
between gain molecules on spasing in small composite nanoparticles with a metallic core …