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Letter

Nonlinear Optical Imaging of Individual Carbon Nanotubes with Four-Wave-Mixing Microscopy

Hyunmin Kim^†, Tatyana Sheps^‡, Philip G. Collins*^‡ and Eric O. Potma*^†

Department of Chemistry, University of California, Irvine, California 92697-2025, and Department of Physics and Astronomy, University of California, Irvine, California 92697-4576

Nano Lett., 2009, 9 (8), pp 2991–2995

DOI: 10.1021/nl901412x

Publication Date (Web): July 28, 2009

* Corresponding authors, collinsp@uci.edu and epotma@uci.edu., †

Department of Chemistry.

, ‡

Department of Physics and Astronomy.

Abstract

Dual color four-wave-mixing (FWM) microscopy is used to spatially resolve the third-order optical response from individual carbon nanotubes. Good signal-to-noise is obtained from single-walled carbon nanotubes (SWNT) sitting on substrates, when the excitation beams are resonant with electronic transitions of the nanotube, by detecting the FWM response at the anti-Stokes frequency. Whereas the coherent anti-Stokes (CAS) signal is sensitive to both electronic and vibrational resonances of the material, it is shown that the signal from individual SWNTs is dominated by the electronic response. The CAS signal is strongly polarization dependent, with the highest signals found parallel with the enhanced electronic polarizibility along the long axis of the SWNT.

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History

Published In Issue August 12, 2009
Article ASAPJuly 28, 2009
Received: May 4, 2009
Revised: July 13, 2009

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Letter

Nonlinear Optical Imaging of Individual Carbon Nanotubes with Four-Wave-Mixing Microscopy

Abstract

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SciFinder Links

History

Recommend & Share

Related Content

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Signal Amplification by 1/f Noise in Silicon-Based Nanomechanical Resonators

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