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Squeezing millimeter waves into microns
Hibbins, Alastair P.
Sambles, J. Roy
Lawrence, Christopher R.
Brown, James R.
University of Exeter; QinetiQ Ltd., Farnborough
Physical Review Letters
American Physical Society
Microstructured metallic devices will play a vital role in the continuing search to manipulate the passage of electromagnetic radiation relevant to optical, microwave, and communication technologies. Here, we investigate the electromagnetic response of a completely novel and ultrathin (≪wavelength) structure within which is buried a metal-clad waveguiding layer (“core”) of subwavelength width. By removing metal from the core cladding to form a periodic array of slits, radiation is coupled into a standing wave within the layer and the structure resonantly absorbs or transmits radiation of wavelength more than 100 times its thickness. Additionally, such structures display the truly remarkable capability of compressing half of the standing-wave wavelength into a fraction of the expected distance.
Alastair P. Hibbins, J. Roy Sambles, Christopher R. Lawrence and James R. Brown, Physical Review Letters, Vol. 92, article 143904 (2004). "Copyright © 2004 by the American Physical Society."
92 (14), article 143904