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

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

8 Цитирования (Scopus)

Аннотация

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 For these lenses, the paraxial approximation for the Reyleigh resolution criterion is no longer valid.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.

Язык оригиналаАнглийский
Название основной публикацииIRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics
Страницы170
Число страниц1
DOI
СостояниеОпубликовано - 2006
Опубликовано для внешнего пользованияДа
СобытиеIRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics - Shanghai, Китай
Продолжительность: 18 сен 200622 сен 2006

Конференция

КонференцияIRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics
СтранаКитай
ГородShanghai
Период18.9.0622.9.06

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ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Цитировать

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. В IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics (стр. 170). [4222112] https://doi.org/10.1109/ICIMW.2006.368378