Nonlinear Optical Response in Single-Walled Carbon Nanotubes under Resonant Excitation Conditions

Takahashi, Y.; Kishida, H.; Nakamura, A.
January 2010
AIP Conference Proceedings;1/4/2010, Vol. 1199 Issue 1, p541
Conference Proceeding
Third-order nonlinear optical responses in single walled carbon nanotubes have been investigated by means of pump-probe spectroscopy with various excitation conditions. In the excitation spectra of nonlinear susceptibilities probed at the E22 transition energy of the (8, 4) tube, an additional peak is observed at ∼0.2 eV above the E22 transition energy. It is found that the phonon-assisted transition is involved in the third-order nonlinear optical processes.


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