Nonlinear imaging of nanostructures using beams with binary phase modulation

Léo Turquet, Joona Pekko Kakko, Hua Jiang, Tero J. Isotalo, Teppo Huhtio, Tapio Niemi, Esko Kauppinen, Harri Lipsanen, Martti Kauranen, Godofredo Bautista

    Research output: Contribution to journalArticleScientificpeer-review

    3 Citations (Scopus)
    33 Downloads (Pure)


    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.

    Original languageEnglish
    Pages (from-to)10441-10448
    Number of pages8
    JournalOptics Express
    Issue number9
    Publication statusPublished - 1 May 2017
    Publication typeA1 Journal article-refereed

    Publication forum classification

    • Publication forum level 2

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics


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