Sylvain D. Gennaro

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We demonstrate a method to extract absorption and scattering from phase and intensity measurements of extinction from a single optical nano-antenna by developing a novel spectrally resolved interferometer integrated within a confocal microscope.
Nonlinear phenomena are central to modern photonics but, being inherently weak, typically require gradual accumulation over several millimeters. For example, second harmonic generation (SHG) is typically achieved in thick transparent nonlinear crystals by phase-matching energy exchange between light at initial, ω, and final, 2ω, frequencies. Recently,(More)
We demonstrate a method to measure chromatic aberrations of microscope objectives with metallic nanoparticles using white light. Extinction spectra are recorded while scanning a single nanoparticle through a lens's focal plane. We show a direct correlation between the focal wavelength and the longitudinal chromatic focal shift through our analysis of the(More)
We demonstrate a novel method to measure chromatic aberrations of microscope objectives with metallic nano-particles using incoherent white light. Extinction spectra are recorded while scanning a single nano-particle through a lens's focal plane. We show a direct correlation between the focal wavelength and the longitudinal chromatic focal shift through(More)
A recurring theme in optics and photonics is the ability of metal nanostructures to imbue artificial materials with new functions. Metallic nano-antennas [1], so-called meta-atoms, are the building blocks of such metamaterials that boast unusual linear [2, 3] and nonlinear [4- 6] characteristics not observed in natural materials. Recently, nonlinear(More)
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