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Multiresonant broadband optical antennas as efficient tunable nanosources of second harmonic light.

Aouani, H; Navarro-Cia, M; Rahmani, M; Sidiropoulos, TPH; Hong, M; Oulton, RF; Maier, SA; (2012) Multiresonant broadband optical antennas as efficient tunable nanosources of second harmonic light. Nano Lett , 12 (9) pp. 4997-5002. 10.1021/nl302665m.

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Abstract

We report the experimental realization of efficient tunable nanosources of second harmonic light with individual multiresonant log-periodic optical antennas. By designing the nanoantenna with a bandwidth of several octaves, simultaneous enhancement of fundamental and harmonic fields is observed over a broad range of frequencies, leading to a high second harmonic conversion efficiency, together with an effective second order susceptibility within the range of values provided by widespread inorganic crystals. Moreover, the geometrical configuration of the nanoantenna makes the generated second harmonic signal independent from the polarization of the fundamental excitation. These results open new possibilities for the development of efficient integrated nonlinear nanodevices with high frequency tunability.

Type: Article
Title: Multiresonant broadband optical antennas as efficient tunable nanosources of second harmonic light.
Location: United States
DOI: 10.1021/nl302665m
Keywords: Crystallization, Equipment Design, Equipment Failure Analysis, Light, Lighting, Materials Testing, Nanostructures, Nanotechnology, Particle Size, Scattering, Radiation, Surface Plasmon Resonance, Transducers
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: http://discovery.ucl.ac.uk/id/eprint/1373767
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