Investigation of KTiOPO4 nanocrystals by means of second-harmonic light emission

L. Le Xuan; C. Zhou; A. Slablab; D. Chauvat; J.-F. Roch

doi:10.1051/anphys:2008017

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Volume 32 / No 2-3 (2007)

Ann. Phys. Fr., 32 2-3 (2007) 99-101

Abstract

Issue		Ann. Phys. Fr. Volume 32, Number 2-3, 2007 COLOQ'1010th conference on lasers and quantum optics


Page(s)		99 - 101
Section		Short contributions
DOI		https://doi.org/10.1051/anphys:2008017
Published online		23 May 2008

Ann. Phys. Fr., Vol. 32, N°2-3 2007, pp. 99-101

Investigation of KTiOPO₄ nanocrystals by means of second-harmonic light emission

L. Le Xuan, C. Zhou, A. Slablab, D. Chauvat and J.-F. Roch

Laboratoire de Photonique Quantique et Moléculaire, UMR CNRS 8537, ENS de Cachan, 94235 Cachan, France

Corresponding author: roch@physique.ens-cachan.fr

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 nanocrystals and study them by second-harmonic generation microscopy and atomic force microscopy independently. 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 of a single KTiOPO₄ nanocrystal makes it a good candidate for a vectorial probe of electromagnetic near-fields and coherent imaging.