Kerker conditions upon lossless, absorption, and optical gain regimes

J Olmos-Trigo, C Sanz-Fernández, DR Abujetas… - Physical Review Letters, 2020 - APS
The directionality and polarization of light show peculiar properties when the scattering by a
dielectric sphere can be described exclusively by electric and magnetic dipolar modes …

Surface-enhanced circular dichroism spectroscopy on periodic dual nanostructures

J Lasa-Alonso, DR Abujetas, Á Nodar, JA Dionne… - Acs …, 2020 - ACS Publications
Increasing the sensitivity of chiral spectroscopic techniques such as circular dichroism (CD)
spectroscopy is a current aspiration in the research field of nanophotonics. Enhancing CD …

Solving maxwell's equations using polarimetry alone

J Olmos-Trigo - Nano letters, 2024 - ACS Publications
Maxwell's equations are solved when the amplitude and phase of the electromagnetic field
are determined at all points in space. Generally, the Stokes parameters can only capture the …

Far‐Field Detection of Near‐Field Circular Dichroism Enhancements Induced by a Nanoantenna

J Olmos‐Trigo, H Sugimoto… - Laser & Photonics Reviews, 2024 - Wiley Online Library
Nanophotonics can enhance the inherent weak signal exhibited by chiral molecules in
circular dichroism (CD) spectroscopy experiments. One mechanism to achieve this CD …

Optimal backward light scattering by dipolar particles

J Olmos-Trigo, DR Abujetas, C Sanz-Fernández… - Physical Review …, 2020 - APS
The near-zero forward intensity condition for light scattering by a dielectric dipolar sphere is
usually associated with the generalized second Kerker condition, at which equal amplitude …

Spin angular momentum of guided light induced by transverse confinement and intrinsic helicity

DR Abujetas, JA Sánchez-Gil - ACS Photonics, 2020 - ACS Publications
Spin and orbital angular momenta of light have been a subject of fundamental interest since
long ago, classically associated with circular polarization and wave vector. In recent years …

Capturing near-field circular dichroism enhancements from far-field measurements

J Olmos-Trigo, J Lasa-Alonso, I Gómez-Viloria… - Physical Review …, 2024 - APS
Molecular circular dichroism (CD) spectroscopy faces significant limitations due to the
inherent weakness of chiroptical light-matter interactions. In this view, resonant optical …

All-dielectric metasurface grating for on-chip multi-channel orbital angular momentum generation and detection

J Wang, Z Shao, Y Wen, X Qiu, Y Chen, Y Zhang… - Optics …, 2019 - opg.optica.org
Optical vortices, carrying quantized orbital angular momentum (OAM) states, have been
widely investigated because of their promising applications in both classical and quantum …

Unveiling dipolar spectral regimes of large dielectric Mie spheres from helicity conservation

J Olmos-Trigo, DR Abujetas, C Sanz-Fernández… - Physical Review …, 2020 - APS
Controlling the helicity and directionality of the scattered light by dielectric particles is
paramount to a variety of phenomenology of interest in all-dielectric optics and photonics. In …

Characterizing the Backscattered Spectrum of Mie Spheres

M Molezuelas‐Ferreras, Á Nodar… - Laser & Photonics …, 2024 - Wiley Online Library
This study describes both experimentally and theoretically an important hitherto
undiscovered feature of the scattering of micron‐sized spherical objects when illuminated …