Modulated optical transmission of subwavelength hole arraysin metal- V O 2 films

We demonstrate the modulation of the transmission of near-infrared light through a periodic array of subwavelength apertures in Ag - V O 2 and Au - V O 2 double-layer films using the semiconductor-to-metal phase transition in V O 2 . The transmitted intensity ratio increases by a factor of 8 as the...

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Bibliographic Details
Published in:Applied physics letters 2006-03, Vol.88 (13), p.133115-133115-3
Main Authors: Suh, J. Y., Donev, E. U., Lopez, R., Feldman, L. C., Haglund, R. F.
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Summary:We demonstrate the modulation of the transmission of near-infrared light through a periodic array of subwavelength apertures in Ag - V O 2 and Au - V O 2 double-layer films using the semiconductor-to-metal phase transition in V O 2 . The transmitted intensity ratio increases by a factor of 8 as the V O 2 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 V O 2 material, a conjecture that is semiquantitatively confirmed by simulation.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2190463