Investigation of KTiOPO4 nanocrystals by means of second-harmonic light emission L. Le Xuan, C. Zhou, A. Slablab, D. Chauvat and J.-F. Roch Ann. Phys. Fr., 32 2-3 (2007) 99-101 Published online: 23 May 2008 DOI: 10.1051/anphys:2008017