Application of tip-enhanced microscopy for nonlinear Raman spectroscopy

Ichimura, Taro; Hayazawa, Norihiko; Hashimoto, Mamoru; Inouye, Yasushi; Kawata, Satoshi
March 2004
Applied Physics Letters;3/8/2004, Vol. 84 Issue 10, p1768
Academic Journal
A tip-enhanced electric field at a metallic probe tip of apertureless near-field scanning optical microscope was applied to a third-order nonlinear optical process, coherent anti-Stokes Raman spectroscopy. The combination of the enhanced field and third-order nonlinearity resolved molecular vibrations of adenine molecules embedded in deoxyribonucleic acid double-helix nanocrystals beyond the diffraction limit of light. © 2004 American Institute of Physics.


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