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A nanohole in a thin metal film as an efficient nonlinear optical element |
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| Authors: | T V Konstantinova P N Melent’ev A E Afanas’ev A A Kuzin P A Starikov A S Baturin A V Tausenev A V Konyashchenko V I Balykin |
| Institution: | 1. Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow oblast, 142190, Russia 2. Moscow Institute of Physics and Technology, Dolgoprudnyi, Moscow oblast, 141700, Russia 3. OOO Avesta-proekt, Troitsk, Moscow oblast, 142190, Russia |
| Abstract: | The nonlinear optical properties of single nanoholes and nanoslits fabricated in gold and aluminum nanofilms are studied by third harmonic generation (THG). It is shown that the extremely high third-order optical susceptibility of aluminum and the presence of strong plasmon resonance of a single nanohole in an aluminum film make possible an efficient nanolocalized radiation source at the third harmonic frequency. The THG efficiency for a single nanohole in a thin metal film can be close to unity for an exciting laser radiation intensity on the order of 1013 W/cm2. |
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