145 citations · 302 across the 18 of their papers we have counts for
18 papers
Polarization-Sensitive Third Harmonic Generation in resonant silicon nitride Metasurfaces for deep-UV Emission
Shroddha Mukhopadhyay, Maria Antonietta Vincenti, Radu Malureanu +3
We present a combined experimental and theoretical study of enhanced third-harmonic generation (THG) in silicon nitride metasurfaces. These structures exhibit strong resonant nonli…
Extreme electrodynamics in time-varying media
M. Scalora, M. A. Vincenti, D. de Ceglia +7
Abrupt time variations of the properties of optical materials have been at the center of intense research efforts in recent years, with the prospect of enabling extreme wave transf…
High-harmonic generation from subwavelength silicon films
K. Hallman, S. Stengel, W. Jaffray +10
Recent years have witnessed significant developments in the study of nonlinear properties of various optical materials at the nanoscale. However, in most cases experimental results…
Below the Surface: Unraveling the Intricacies of the Nonlinear Optical Properties of Aluminum through Bound Electrons
M. Scalora, K. Hallman, S. Mukhopadhyay +8
By uncovering novel aspects of second harmonic generation in aluminum we show that there are unusual and remarkable consequences of resonant absorption, namely an unexpectedly crit…
Dramatic enhancement of second and third harmonic generation in gold nanogratings in the visible and UV ranges
S. Mukhopadhyay, L. Rodriguez-Suné, C. Cojocaru +7
Notwithstanding its long history, the study of nonlinear optics from metal surfaces is still an active field of research. For instance, in view of the presence of absorption questi…
Retrieving linear and nonlinear optical dispersions of matter: combined experiment-numerical ellipsometry in Silicon, Gold and Indium Tin Oxide
L. Rodriguez-Sune, J. Trull, N. Akozbek +4
The predominant methods currently used to determine nonlinear optical constants like the nonlinear refractive index n2 or chi3 rely mostly on experimental, open and closed z-scan t…
Harmonic generation from gold nanolayers: an old problem under a new light
L. Rodríguez-Suné, J. Trull, C. Cojocaru +4
Understanding how light interacts at the nanoscale with metals, semiconductors, or ordinary dielectrics is pivotal if one is to properly engineer nano-antennas, filters and, more g…
Single-shot d-scan technique for ultrashort laser pulse characterization using transverse second-harmonic generation in random nonlinear crystals
Francisco J. Salgado-Remacha, Benjamín Alonso, Helder Crespo +10
We demonstrate a novel dispersion-scan (d-scan) scheme for single-shot temporal characterization of ultrashort laser pulses. The novelty of this method relies on the use of a highl…
Electrodynamics of Conductive Oxides: Intensity-dependent anisotropy, reconstruction of the effective dielectric constant, and harmonic generation
Michael Scalora, Jose Trull, Domenico de Ceglia +5
We study electromagnetic pulse propagation in an indium tin oxide nanolayer in the linear and nonlinear regimes. We use the constitutive relations to reconstruct the effective diel…
Study of second and third harmonic generation from an indium tin oxide nanolayer: influence of nonlocal effects and hot electrons
Laura Rodriguez-Sune, Michael Scalora, Allan Johnson +6
We report comparative experimental and theoretical studies of second and third harmonic generation from a 20nm-thick indium tin oxide layer in proximity of the epsilon-near-zero co…
Photonic crystal spatial filtering in broad aperture diode laser
Sandeep Gawali, Darius Gailevičius, Guillermo Gerre-Werner +5
Broad aperture semiconductor lasers usually suffer from low spatial quality of the emitted beams. Due to the highly compact character of such lasers the use of a conventional intra…
Resonant, broadband and highly efficient optical frequency conversion in semiconductor nanowire gratings at visible and UV wavelengths
M. Scalora, J. Trull, C. Cojocaru +5
Using a hydrodynamic approach we examine bulk- and surface-induced second and third harmonic generation from semiconductor nanowire gratings having a resonant nonlinearity in the a…
Second and Third harmonic generation in the opaque region of GaAs
L. Rodriguez, J. Trull, M. Scalora +2
Second and third harmonic generation in the opaque region of a GaAs wafer is experimentally observed both in transmission and reflection. These harmonic components can propagate th…
Reevaluation of radiation reaction and consequences for light-matter interactions at the nanoscale
M. Scalora, M. A. Vincenti, D. de Ceglia +6
In the context of electromagnetism and nonlinear optical interactions damping is generally introduced as a phenomenological, viscous term that dissipates energy, proportional to th…
Type I and type II second harmonic generation of conically refracted beams
Alex Turpin, Yury V. Loiko, Todor K. Kalkandjiev +3
Type I and type II second harmonic generation (SHG) of a beam transformed by the conical refraction phenomenon are presented. We show that, for type I, the second harmonic intensit…
Generation Efficiency of the Second Harmonic Inhomogeneous Component
V. Roppo, F. Raineri, C. Cojocaru +5
In this letter we experimentally demonstrate second harmonic conversion in the opaque region of a GaAs cavity with efficiencies of the order of 0.1% at 612nm, using 3ps pump pulses…
Field Localization and Enhancement of Phase Locked Second and Third Harmonic Generation in Absorbing Semiconductor Cavities
V. Roppo, C. Cojocaru, F. Raineri +7
We predict and experimentally observe the enhancement by three orders of magnitude of phase mismatched second and third harmonic generation in a GaAs cavity at 650nm and 433nm, res…
Nondifractive Propagation of Light in Photonic Crystals
K. Staliunas, R. Herrero
We show that diffraction of electromagnetic radiation (in particular of a visible light) can disappear in propagation through materials with periodically in space modulated refract…