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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 23, Iss. 2 — Jan. 15, 1998
  • pp: 91–93

Anomalous absorption of TM electromagnetic waves by an ultrathin layer: optical analog of liquid friction

D. K. Gramotnev  »View Author Affiliations


Optics Letters, Vol. 23, Issue 2, pp. 91-93 (1998)
http://dx.doi.org/10.1364/OL.23.000091


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Abstract

A strong maximum of absorption (as much as 100%) of bulk TM electromagnetic waves by an ultrathin film with imaginary dielectric permittivity is shown to exist at some optimal film thickness. This typical thickness is usually much smaller than the wavelength and the wave penetration depth in the material of the film. The absorptivity maximum increases and the typical thickness decreases with increasing dielectric permittivity of the layer. An optical analog of linear (liquid) friction is discussed. A frictional contact approximation for TM electromagnetic waves is analyzed, and relevant boundary conditions with an optical coefficient of friction are derived.

© 1998 Optical Society of America

OCIS Codes
(240.0240) Optics at surfaces : Optics at surfaces
(260.0260) Physical optics : Physical optics
(310.0310) Thin films : Thin films

Citation
D. K. Gramotnev, "Anomalous absorption of TM electromagnetic waves by an ultrathin layer: optical analog of liquid friction," Opt. Lett. 23, 91-93 (1998)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-23-2-91

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