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1.
Opt Lett ; 47(21): 5445-5448, 2022 Nov 01.
Article in English | MEDLINE | ID: mdl-37219240

ABSTRACT

We report the spectral shaping of supercontinuum generation in liquids by employing properly engineered Bessel beams coupled with artificial neural networks. We demonstrate that given a custom spectrum, neural networks are capable of outputting the experimental parameters needed to generate it experimentally.

2.
Opt Lett ; 43(5): 1063-1066, 2018 Mar 01.
Article in English | MEDLINE | ID: mdl-29489781

ABSTRACT

We demonstrate that paraxial ring-Airy beams can approach the wavelength limit, while observing a counterintuitive, strong enhancement of their focal peak intensity. Using numerical simulations, we show that this behavior is a result of the coherent constructive action of paraxial and nonparaxial energy flow. A simple theoretical model enables us to predict the parameter range over which this is possible.


Subject(s)
Models, Theoretical , Refractometry/methods , Scattering, Radiation , Computer Simulation , Light , Physical Phenomena
3.
Sci Rep ; 6: 25380, 2016 05 06.
Article in English | MEDLINE | ID: mdl-27151104

ABSTRACT

We explore the excitation of plasmons in 3D plasmon crystal metamaterials and report the observation of a delocalized plasmon mode, which provides extremely high spectral sensitivity (>2600 nm per refractive index unit (RIU) change), outperforming all plasmonic counterparts excited in 2D nanoscale geometries, as well as a prominent phase-sensitive response (>3*10(4) deg. of phase per RIU). Combined with a large surface for bioimmobilization provided by the 3D matrix, the proposed sensor architecture promises a new important landmark in the advancement of plasmonic biosensing technology.


Subject(s)
Biosensing Techniques/methods
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