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INVESTIGATION OF THE RESOLUTION OF PHASE CORRECTING FRESNEL LENSES WITH SMALL VALUES OF F/D AND SUBWAVELENGTH FOCUS
I.V. Minin, O.V. Minin
Novosibirsk State Technical University, Russia
N. Gagnon, A. Petosa
Communications Research Centre Canada

 PDF, 768 kB

Страницы: 65-68.

Язык статьи: Английский.

Аннотация:
diameter (F/D) and with focal lengths of two wavelengths or less are investigated. For these lenses, the paraxial approximation for the Rayleigh resolution criterion is no longer valid. For Fresnel lenses designed with F/D < 0.2 and F ≤ λ, spatial resolutions of less than 0.5 λ 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.

Keywords:
correctingfresnel lenses, subwavelength focus, wavelength, paraxial approximation, Rayleigh resolution

Citation:
Minin IV, Minin OV, Gagnon N, Petosa A. Investigation of the resolution of phase correcting fresnel lenses with small values of f/d and subwavelength focus. Computer Optics 2006; 30: 65-68.

Литература:

  1. Minin OV, Minin IV. Diffractive optics of millimeter waves. London: CRC Press; 2004. ISBN: 978-0-7503-0907-3.
  2. Goldsmith PF. Quasioptical systems: Gaussian beam quasioptical propogation and applications. Springer-Verlag US; 1998. ISBN: 978-0-412-83940-5.
  3. Guenther RD. Modern optics. New York: John Wiley and Sons; 1990. ISBN: 978-0-471-60538-6.
  4. Kearey PD, Klein AG. Resolving power of zone plates. J Mod Opt 1989; 36(3): 361-367. DOI: 10.1080/09500348914550391.
  5. Johnson RC, ed. Antenna engineering handbook. 3rd ed. New York: McGraw-Hill Inc.; 1992. ISBN: 978-0-07-032381-0.
  6. Ojeda-Castaneda J, Gomez-Reino C, eds. Selected papers on zone plates. Washington: SPIE Press; 1996. ISBN: 978-1-62841- 004-4.
  7. EMPIRE. Source: 〈www.empire.de〉.
  8. Minin IV, Minin OV. Investigation of binary DOEs with superrelay resolution within the framework of electromagnetic theory [In Russian]. Proc 8th Int Conf "Current problems of electronic instrumentation" 2006.
  9. Petosa A, Thirakoune S, Minin IV, Minin OV. Array of hexagonal Fresnel zone plate lens antennas. Electron Lett 2006; 42(15): 834-836. DOI: 10.1049/el:20061258

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