Title :
Investigation of the second-harmonic light emission by KTiOPO4 nanometric-sized crystals as an in situ nonlinear nanosource
Author :
Le, X.L. ; Sandeau, N. ; Zhou, C. ; Chauvat, D. ; Treussart, F. ; Brasselet, S. ; Roch, J.F. ; Tard, C. ; Perruchas, S. ; Gacoin, Th
Author_Institution :
UMR CNRS 8537, Cachan
Abstract :
In this paper, we propose the inorganic nonlinear KTiOPO4 (KTP) crystals of nanometric size with a strong second-harmonic coherent emission when illuminated by femtosecond infrared pulses. The non-resonant character of the nonlinear interaction prevents from any photobleaching or blinking. The signal therefore exhibits a perfect photostability. We show that analysis of coherently emitted non-linear field allows us to characterize isolated nanocrystal orientation.
Keywords :
high-speed optical techniques; nanostructured materials; optical harmonic generation; optical materials; potassium compounds; titanium compounds; KTP; KTP crystal; coherently emitted nonlinear field; femtosecond infrared pulse; nanocrystal orientation; nanometric-sized crystal; nonlinear nanosource; photobleaching; photostability; second-harmonic light emission; Light scattering; Microscopy; Nanocrystals; Photobleaching; Photonic crystals; Polarization; Polymer films; Probes; Size measurement; Temperature;
Conference_Titel :
Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-0931-0
Electronic_ISBN :
978-1-4244-0931-0
DOI :
10.1109/CLEOE-IQEC.2007.4387022
