Nonlinear imaging of nanostructures using beams with binary phase modulation

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Journal Title
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Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2017-05-01
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Language
en
Pages
8
10441-10448
Series
Optics Express, Volume 25, issue 9
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.
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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