Nonlinear imaging of nanostructures using beams with binary phase modulation
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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8
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Optics Express, Volume 25, issue 9, pp. 10441-10448
Abstract
We demonstrate nonlinear microscopy of oriented nanowires using excitation beams with binary phase modulation. A simple and intuitive optical scheme comprising a spatial light modulator gives us the possibility to control the phase across an incident Hermite-Gaussian beam of order (1,0) (HG10 mode). This technique allows us to gradually vary the spatial distribution of the longitudinal electric fields in the focal volume, as demonstrated by second-harmonic generation from vertically-aligned GaAs nanowires. These results open new opportunities for the full control of polarization in the focal volume to enhance light interaction with nanostructured materials.Description
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Turquet, L, Kakko, J P, Jiang, H, Isotalo, T J, Huhtio, T, Niemi, T, Kauppinen, E, Lipsanen, H, Kauranen, M & Bautista, G 2017, 'Nonlinear imaging of nanostructures using beams with binary phase modulation', Optics Express, vol. 25, no. 9, pp. 10441-10448. https://doi.org/10.1364/OE.25.010441