14 citations · 27 across the 10 of their papers we have counts for
10 papers
Second-Harmonic Generation at a Fourth-Order Exceptional Point Degeneracy
Albert Herrero-Parareda, Domenico de Ceglia, Maria Antonietta Vincenti +3
An anomalous flat-band dispersion provided by a degenerate band edge (DBE) of longitudinal optical modes in a double-grating waveguide is used to enhance second-harmonic generation…
Frozen mode in coupled single-mode waveguides with gratings
Albert Herrero-Parareda, Nathaniel Furman, Bradley J. Thompson +3
We present a systematic methodology for designing slow-light photonic integrated circuits with a frozen mode based on a special kind of exceptional point of degeneracy (EPD) of ord…
Lasing at a Stationary Inflection Point: erratum
Albert Herrero-Parareda, Nathaniel Furman, Tarek Mealy +4
This erratum provides an updated fitting function for the lasing threshold of finite-length cavities operating at a stationary inflection point (SIP) or regular band edge (RBE) res…
Experimental Measurement of Enhanced Group Delay Silicon Photonic Waveguides Indicative of the Frozen Mode Regime Around the Stationary Inflection Point
Nathaniel Furman, Albert Herrero-Parareda, Anthony Rapp +6
The dispersion engineering of periodic silicon photonic waveguides presents opportunities for significant group delay enhancement compared to uniform waveguides of comparable lengt…
Advancements in Degenerate Distributed Feedback Lasing
Albert Herrero-Parareda, Nathaniel Furman, Filippo Capolino
We advance the concept of degenerate distributed feedback (DDFB) lasing in a double grating photonic structure that operates near a degenerate band edge (DBE) to achieve a robust s…
Experimental generation of optimally chiral azimuthally-radially polarized beams
Albert Herrero-Parareda, Nicolas Perez, Filippo Capolino +1
We implement a paraxial azimuthally-radially polarized beam (ARPB), a novel class of structured light beams that can be optimal chiral (OC), leading to maximum chirality density at…
Array oscillator in coupled waveguides with nonlinear gain and radiation resistances saturating at exceptional point
Alireza Nikzamir, Albert Herrero-Parareda, Nathaniel Furman +3
A periodically loaded waveguide composed of periodic discrete nonlinear gain and radiating elements supports a stable oscillation regime related to the presence of an exceptional p…
Low-Threshold Lasing with Frozen Mode Regime and Stationary Inflection Point in Three Coupled Waveguide Structure
Kessem Zamir- Abramovich, Nathaniel Furman, Albert Herrero-Parareda +2
The frozen mode regime is a unique slow-light scenario in periodic structures, where the flat-bands (zero group velocity) are associated with the formation of high-order stationary…
The Azimuthally-Radially Polarized Beam: Helicity and Momentum Densities, Generation and Optimal Chiral Light
Albert Herrero-Parareda, Filippo Capolino
We investigate the optical properties of the azimuthally-radially polarized beam (ARPB), a superposition of an azimuthally polarized beam and a radially polarized beam, which can b…
Frozen mode in an asymmetric serpentine optical waveguide
Albret Herrero Parareda, Ilya Vitebksiy, Jacob Scheuer +1
The existence of a frozen mode in a periodic serpentine waveguide with broken longitudinal symmetry is demonstrated numerically. The frozen mode is associated with a stationary inf…