Title: Superresolution vibrational imaging by simultaneous detection of Raman and hyper-Raman scattering
Authors: Matsuzaki, Korenobu
Shimada, Rintaro
Hamaguchi, Hiro-o
Department of Applied Chemistry
Institute of Molecular science
Issue Date: 1-Jul-2011
Abstract: We have developed a superresolution vibrational imaging method by simultaneous detection of Raman and hyper-Raman scattering. Raman and hyper-Raman images obtained with the same laser spot carry independent information on the sample spatial distribution, owing to different signal dependence (linear in Raman and quadratic in hyper-Raman) on the incident light intensity. This information can be quantitatively analyzed to recover the incident light intensity distribution at the focal plane. A superresolution vibrational image is then derived by the constrained deconvolution of the images by the obtained incident light intensity distribution. This method has been applied to a TiO(2) nanostructure and the obtained superresolution image was compared with a scanning electron microscopy image. The spatial resolution achieved by the present method is evaluated to be 160 nm, which is more than twice better than the diffraction limited resolution. (C) 2011 Optical Society of America
URI: http://dx.doi.org/10.1364/OL.36.002545
ISSN: 0146-9592
DOI: 10.1364/OL.36.002545
Volume: 36
Issue: 13
Begin Page: 2545
End Page: 2547
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