TITLE

Modulated optical transmission of subwavelength hole arrays in metal-VO2 films

AUTHOR(S)
Suh, J. Y.; Donev, E. U.; Lopez, R.; Feldman, L. C.; Haglund Jr., R. F.
PUB. DATE
March 2006
SOURCE
Applied Physics Letters;3/27/2006, Vol. 88 Issue 13, p133115
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We demonstrate the modulation of the transmission of near-infrared light through a periodic array of subwavelength apertures in Ag�VO2 and Au�VO2 double-layer films using the semiconductor-to-metal phase transition in VO2. The transmitted intensity ratio increases by a factor of 8 as the VO2 goes from the semiconductor to the metal phase. We attribute this modulation to the switchable dielectric-permittivity contrast between the air-filled holes in the array and the surrounding VO2 material, a conjecture that is semiquantitatively confirmed by simulation.
ACCESSION #
20735848

Tags: WAVELENGTHS;  OPTICAL transfer function;  METALLIC films;  METALS;  DIELECTRICS;  SEMICONDUCTORS

 

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