FDTD analysis of a flat diffractive optics with sub-Reyleigh limit resolution in MM/THz waveband

I. V. Minin, Oleg V. Minin, N. Gagnon, A. Petosa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

The focusing properties of phase correcting Fresnel lenses with small values of focal length - to - diameter (FID) and with focal lengths of two wavelengths or less are investigated. For these lenses, the paraxial approximation for the Reyleigh resolution criterion is no longer valid. For Fresnel lenses designed with F/D < 0.2 and F ≤ λ, spatial resolutions of less than 0.5λ are possible, which is finer than what can typically be achieved for conventional (paraxial) designs. The spot beams in these cases are not quite axially symmetrical due to the presence of anti-symmetric field components, which vanish for larger values of F/D.

Original languageEnglish
Title of host publicationIRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics
Pages170
Number of pages1
DOIs
Publication statusPublished - 2006
Externally publishedYes
EventIRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics - Shanghai, China
Duration: 18 Sep 200622 Sep 2006

Conference

ConferenceIRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics
CountryChina
CityShanghai
Period18.9.0622.9.06

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ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

Minin, I. V., Minin, O. V., Gagnon, N., & Petosa, A. (2006). FDTD analysis of a flat diffractive optics with sub-Reyleigh limit resolution in MM/THz waveband. In IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics (pp. 170). [4222112] https://doi.org/10.1109/ICIMW.2006.368378