13 October 1998 Raman spectroscopy: probing the border between near-field and far-field spectroscopy
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We have performed Raman spectroscopy using a near-field scanning optical microscope. The small sample volume coupled with the light-starved nature of the Raman effect makes nano-Raman studies difficult. We present results showing near-field effects in an investigation of Rb-doped KTP. These effects include a change in selection rules due to the presence of a z-polarization component in the near-field, a surface-enhancement effect in near-field Raman data, a reduced Rayleigh tail, and simultaneous topography with the near-field probe. An image taken within a Raman feature demonstrates that nano-Raman imaging is indeed possible if the near-field instrument has considerable long-term stability.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hans D. Hallen, Hans D. Hallen, Michael A. Paesler, Michael A. Paesler, Catherine L. Jahncke, Catherine L. Jahncke, } "Raman spectroscopy: probing the border between near-field and far-field spectroscopy", Proc. SPIE 3467, Far- and Near-Field Optics: Physics and Information Processing, (13 October 1998); doi: 10.1117/12.326819; https://doi.org/10.1117/12.326819

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