TY - JOUR

T1 - Modeling of Subwavelength Gratings: Near-Field Behavior

AU - Chernyavsky, Alexander

AU - Bereza, Alexey

AU - Frumin, Leonid

AU - Shapiro, David

N1 - The work was funded by the Russian Science Foundation, grant #22-22-00633.

PY - 2023/12

Y1 - 2023/12

N2 - Subwavelength gratings have received considerable attention in the fields of photonics, optoelectronics, and image sensing. This paper presents simple analytical expressions for the near-field intensity distribution of radiation scattered by these gratings. Our proposed methodology employs a 2D point dipole model and a specialized version of perturbation theory. By validating our models via numerical techniques including boundary and finite element methods, we demonstrate their effectiveness, even for narrow slits.

AB - Subwavelength gratings have received considerable attention in the fields of photonics, optoelectronics, and image sensing. This paper presents simple analytical expressions for the near-field intensity distribution of radiation scattered by these gratings. Our proposed methodology employs a 2D point dipole model and a specialized version of perturbation theory. By validating our models via numerical techniques including boundary and finite element methods, we demonstrate their effectiveness, even for narrow slits.

KW - diffraction

KW - light scattering

KW - near field

KW - numerical modelling

KW - parallel cylinders

KW - point dipole approximation

KW - subwavelength grating

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85180702623&origin=inward&txGid=d19d9cd5f00788d8d26e4cec78a4d870

UR - https://www.mendeley.com/catalogue/e20373d2-43f8-322b-9a13-c1630da93e05/

U2 - 10.3390/photonics10121332

DO - 10.3390/photonics10121332

M3 - Article

VL - 10

JO - Photonics

JF - Photonics

SN - 2304-6732

IS - 12

M1 - 1332

ER -