DOI: 10.3390/photonics10121332 ISSN: 2304-6732

Modeling of Subwavelength Gratings: Near-Field Behavior

Alexander Chernyavsky, Alexey Bereza, Leonid Frumin, David Shapiro
  • Radiology, Nuclear Medicine and imaging
  • Instrumentation
  • Atomic and Molecular Physics, and Optics

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.

More from our Archive