Photostable Single KTiOPO4 Nanocrystals for Second-Harmonic Generation Microscopy

The finding of nonlinear nanometric-sized probes is of key importance for the development of nonlinear microscopy in nanosciences and biology. We isolate nonlinear KTiOPO 4 nanocrystals with remarkable photostability in second-harmonic generation under femtosecond infrared laser light excitation. Th...

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Published in2007 IEEE/LEOS International Conference on Optical MEMS and Nanophotonics pp. 39 - 40
Main Authors Le Xuan, L., Zhou, C., Slablab, A., Chauvat, D., Sandeau, N., Brasselet, S., Roch, J.-F., Tard, C., Perruchas, S., Gacoin, T., Villeval, P.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.08.2007
Subjects
Atomic beams
Atomic force microscopy
Image analysis
Laser excitation
Light scattering
Nanobioscience
nanocrystal
Nanocrystals
nonlinear microscopy
Optical imaging
Optical polarization
Probes
second harmonic generation
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Summary:The finding of nonlinear nanometric-sized probes is of key importance for the development of nonlinear microscopy in nanosciences and biology. We isolate nonlinear KTiOPO 4 nanocrystals with remarkable photostability in second-harmonic generation under femtosecond infrared laser light excitation. Their size distribution is determined using dynamic light scattering and atomic force microscopy. With both polarization analysis and defocused imaging of the emitted second-harmonic field, we also extract the Euler angles of the crystalline axes of a single nanocrystal. These sub-wavelength particles can find application as near-field vectorial probes.
ISBN:1424406412
9781424406418
ISSN:2160-5033
DOI:10.1109/OMEMS.2007.4373829