Multilayered structures with high subwavelength resolution based on the metal-dielectric composites
2009 (English)In: J OPT SOC AM A-OPT IMAGE SCI, ISSN 1084-7529, Vol. 26, no 12, 2521-2525 p.Article in journal (Refereed) Published
Pure noble metals are usually considered to be negative-permittivity materials for multilayered structures. Such structures can produce flat equal-frequency contours and achieve subwavelength resolution by enabling all propagating and partial evanescent components of the source radiation to be transformed into propagating harmonics. We show that using a composite metal-dielectric layer with an appropriate metal filling factor instead of a negative-permittivity layer can facilitate operation at practically any desired wavelength and achieve good resolution (0.057 lambda) and that appropriate surface termination can improve the quality of imaging effectively.
Place, publisher, year, edition, pages
2009. Vol. 26, no 12, 2521-2525 p.
NEGATIVE REFRACTION, PERFECT LENS, CONSTANTS
IdentifiersURN: urn:nbn:se:kth:diva-12460ISI: 000272349500006ScopusID: 2-s2.0-73349097853OAI: oai:DiVA.org:kth-12460DiVA: diva2:312936