Single KTiOPO4 nanocrystals for nonlinear probing of local optical fields and interaction with a metallic nanostructure

L. Le Xuan; A. Slablab; C. Zhou; D. Chauvat; Y. De Wilde; S. Perruchas; C. Tard; T. Gacoin; P. Villeval; J-F. Roch

CLEO/Europe and EQEC 2009 Conference Digest
(Optica Publishing Group, 2009),
paper EI_P6

Single KTiOPO₄ nanocrystals for nonlinear probing of local optical fields and interaction with a metallic nanostructure

L. Le Xuan, A. Slablab, C. Zhou, D. Chauvat, Y. De Wilde, S. Perruchas, C. Tard, T. Gacoin, P. Villeval, and J-F. Roch

European Quantum Electronics Conference 2009

Munich Germany
14–19 June 2009
ISBN: 978-1-4244-4080-1

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L. Le Xuan, A. Slablab, C. Zhou, D. Chauvat, Y. De Wilde, S. Perruchas, C. Tard, T. Gacoin, P. Villeval, and J. Roch, "Single KTiOPO4 nanocrystals for nonlinear probing of local optical fields and interaction with a metallic nanostructure," in CLEO/Europe and EQEC 2009 Conference Digest, (Optica Publishing Group, 2009), paper EI_P6.

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Abstract

The finding of nonlinear nanometric-sized probes is of key importance for the development of nonlinear microscopy in physical as well as biological sciences. We isolate nonlinear KTiOPO₄ (KTP) nanocrystals and study them by second-harmonic generation (SHG) microscopy and atomic force microscopy (AFM). With both polarization analysis and defocused imaging of the emitted second harmonic field, we extract the Euler angles of the crystalline axes of a single nanocrystal. The nonlinear features and photostability of a single KTP nanocrystal make it a good candidate for a vectorial probe of electromagnetic near-fields and coherent imaging.

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