Journal
JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS
Volume 115, Issue 2, Pages 185-193Publisher
PLEIADES PUBLISHING INC
DOI: 10.1134/S1063776112070114
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Funding
- Russian Foundation for Basic Research [11-02-00804-a, 09-02-01022-a]
- Extreme Light Fields Program of the Presidium of the Russian Academy of Sciences
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The transmission of light through single nanoholes with diameters considerably smaller than the wavelength of light (smaller than lambda/10) is experimentally studied. The nanoholes were made in a gold film, which is a part of a photonic crystal forming a microcavity with the quality factor Q a parts per thousand 100. A 28-fold increase in the transmission of light through a nanohole inside the microcavity compared to transmission through a nanohole in a gold film is demonstrated. The high spectral selectivity of light transmission through a nanohole is discovered, which is characterized by two features: (i) the transmission maximum is located at the resonance wavelength of the microcavity and (ii) the peak full width at half-maximum is about lambda/90.
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