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)
178 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
MoE publication typeA1 Journal article-refereed


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