Open AccessParticle swarm optimization of nanoantenna-based infrared detectors
Author(s) -
Edgar Briones,
Riemann Ruíz-Cruz,
Joel Briones,
Natalia Fuentes González,
Jorge Simón,
M. P. Gallegos Arreola,
Gregorio Alvarez-Alvarez
Publication year - 2018
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.028484
Subject(s) - optics , bolometer , detector , resistive touchscreen , infrared , particle swarm optimization , refractive index , optoelectronics , physics , materials science , computer science , machine learning , computer vision
The multi-resonant response of three-steps tapered dipole nano-antennas, coupled to a resistive and fast micro-bolometer, is investigated for the efficient sensing in the infrared band. The proposed devices are designed to operate at 10.6 μm, regime where the complex refractive index of metals becomes important, in contrast to the visible counterpart, and where a full parametric analysis is performed. By using a particle swarm algorithm (PSO) the geometry was adjusted to match the impedance between the nanoantenna and the micro-bolometer, reducing the return losses by a factor of 650%. This technique is compared to standards matching techniques based on transmission lines, showing better accuracy. Tapered dipoles therefore open the route towards an efficient energy transfer between load elements and resonant nanoantennas.