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Proceedings Paper

Raman spectroscopy: probing the border between near-field and far-field spectroscopy
Author(s): Hans D. Hallen; Michael A. Paesler; Catherine L. Jahncke
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Paper Abstract

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.

Paper Details

Date Published: 13 October 1998
PDF: 3 pages
Proc. SPIE 3467, Far- and Near-Field Optics: Physics and Information Processing, (13 October 1998); doi: 10.1117/12.326819
Show Author Affiliations
Hans D. Hallen, North Carolina State Univ. (United States)
Michael A. Paesler, North Carolina State Univ. (United States)
Catherine L. Jahncke, St. Lawrence Univ. (United States)


Published in SPIE Proceedings Vol. 3467:
Far- and Near-Field Optics: Physics and Information Processing
Suganda Jutamulia; Toshimitsu Asakura, Editor(s)

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