Hot-electron dynamics in plasmonic nanostructures: fundamentals, applications and overlooked aspects

J Khurgin, AY Bykov, AV Zayats - Elight, 2024‏ - Springer
Light absorption near a surface of conductive materials and nanostructures leads to the
excitation of nonequilibrium, high-energy charge carriers: electrons above the Fermi level or …

Hot electrons modulation of third-harmonic generation in graphene

G Soavi, G Wang, H Rostami, A Tomadin, O Balci… - ACS …, 2019‏ - ACS Publications
Hot electrons dominate the ultrafast (∼ fs–ps) optical and electronic properties of metals and
semiconductors, and they are exploited in a variety of applications including photovoltaics …

Ultrafast dynamics of electron thermalization in gold

C Guo, G Rodriguez, AJ Taylor - Physical review letters, 2001‏ - APS
Time-resolved surface second-harmonic generation (SHG) is used to probe electron
relaxation processes in gold following intense laser excitation at 1.55 eV. For the first time …

Excitation and relaxation of nonthermal electron energy distributions in metals with application to gold

DM Riffe, RB Wilson - Physical Review B, 2023‏ - APS
A semiempirical theory for the excitation and subsequent relaxation of nonthermal electrons
is described. The theory, which is applicable to ultrafast-laser excited metals, is based on the …

Optical field enhancement at cusps between adjacent nanoapertures

TD Onuta, M Waegele, CC DuFort, WL Schaich… - Nano …, 2007‏ - ACS Publications
Optical nonlinear properties of cusps formed at the junction between two circular apertures
in a metal film have been studied by scanning confocal microscopy. For gold, both second …

Ultrafast relaxation dynamics of excited carriers in metals: Simplifying the intertwined dependencies upon scattering strengths, phonon temperature, photon energy …

DM Riffe, RB Wilson - Physical Review B, 2024‏ - APS
Using the Boltzmann transport equation (BTE), we study the evolution of nonequilibrium
carrier distributions in simple (sp) metals, assumed to have been instantaneously excited by …

Theory of multiple harmonic generation in reflection from a metal surface

AT Georges, NE Karatzas - Applied Physics B, 2005‏ - Springer
A microscopic theory is presented for multiple harmonic generation (MHG) from a metal
surface in the jellium approximation and for laser intensities below the critical value for …

Chirp effects in femtosecond laser-induced surface second-harmonic generation from metals

H Teng, C Guo - Applied physics letters, 2004‏ - pubs.aip.org
Chirp effects are studied in femtosecond laser-induced surface second-harmonic generation
(SHG) from gold. We observe a higher SHG yield when the incident laser pulses are …

Model for ultrafast harmonic generation from a gold surface: extraction of dephasing times for continuum–continuum transitions

NE Karatzas, AT Georges - Journal of the Optical Society of America …, 2009‏ - opg.optica.org
A model is presented for describing ultrafast interferometric second-and third-harmonic
generation (SHG and THG) from a gold surface. The model uses an effective four-level …

Surface plasmon-enhanced photoemission and electron acceleration with ultrashort laser pulses

P Dombi - Advances in Imaging and Electron Physics, 2009‏ - Elsevier
Surface plasmon-enhanced electron acceleration proved to be a powerful tool for the all-
optical generation of ultrashort, high-repetition-rate electron beams with multi …