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

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 For these lenses, the paraxial approximation for the Reyleigh resolution criterion is no longer valid.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 language	English
Title of host publication	IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics
Pages	170
Number of pages	1
DOIs	https://doi.org/10.1109/ICIMW.2006.368378
Publication status	Published - 2006
Externally published	Yes
Event	IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics - Shanghai, China Duration: 18 Sep 2006 → 22 Sep 2006

Conference

Conference	IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics
Country	China
City	Shanghai
Period	18.9.06 → 22.9.06

ASJC Scopus subject areas

Computer Networks and Communications
Electrical and Electronic Engineering

Access to Document

10.1109/ICIMW.2006.368378

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FDTD analysis of a flat diffractive optics with sub-Reyleigh limit resolution in MM/THz waveband. / Minin, I. V.; Minin, Oleg V.; Gagnon, N.; Petosa, A.

IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics. 2006. p. 170 4222112.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Minin, IV, Minin, OV, 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., 4222112, pp. 170, IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics, Shanghai, China, 18.9.06. https://doi.org/10.1109/ICIMW.2006.368378

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

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.",

author = "Minin, {I. V.} and Minin, {Oleg V.} and N. Gagnon and A. Petosa",

year = "2006",

doi = "10.1109/ICIMW.2006.368378",

language = "English",

isbn = "1424404002",

pages = "170",

booktitle = "IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics",

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AU - Minin, I. V.

AU - Minin, Oleg V.

AU - Gagnon, N.

AU - Petosa, A.

PY - 2006

Y1 - 2006

N2 - 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.

AB - 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.

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SN - 9781424404001

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BT - IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics

T2 - IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics

Y2 - 18 September 2006 through 22 September 2006