Third-harmonic generation from single gold nanoparticles.

Markus Lippitz; Meindert A van Dijk; Michel Orrit

doi:10.1021/nl0502571

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Third-harmonic generation from single gold nanoparticles.

Markus Lippitz·Meindert A van Dijk·Michel Orrit

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Abstract

We report the first observation of third-harmonic signals from individual gold colloids down to 40 nm diameter. Excited with 1-ps pulses at 1500 nm, the colloids generate 500-nm light, close to the plasmon resonance. The third-harmonic intensity varies as the square of the colloid surface area. Although weak, the third-harmonic signals of gold labels as small as 15 nm in diameter are expected to be accessible with 100-fs pulses. They could be used in microscopy for single-biomolecule tracking.

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Gold Colloid Nanostructures Nanotechnology Journal Article Research Support, Non-U.S. Gov't

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Markus Lippitz, Meindert A van Dijk, Michel Orrit. 2005. Third-harmonic generation from single gold nanoparticles.. https://doi.org/10.1021/nl0502571

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