DFWM: a proposed method to measure χ⁽³⁾ on carbon nanotubes on the nanosecond time‐scale

Abstract

We have investigated the third order nonlinear optical properties of carbon nanotubes thick films. Nanosecond Degenerate Four Wave Mixing (DFWM) measurements have been performed at 532 and 355 nm yielding effective c .3/ values of the order of 10 −11 esu. and indicating the resonant nature of the excitation involved. The determination of the CNTs sample density by means of Scanning Electronic Microscope technique allowed to relate sample bulk properties like c .3/ to the single CNT second order polarizability coefficient.

Advances in nonlinear optical spectroscopies: a historical perspective of developments and applications presented at ECONOS

“…De Dominicis, Fantoni, and collaborators investigated the nonlinear optical properties of carbon nanotubes (CNTs) in a series of papers. Nanosecond DFWM was employed to measure the effective third‐order nonlinear susceptibility . Additional scanning electron microscopy experiments allowed establishing a relationship between the nonlinear optical bulk properties and the second‐order polarizability coefficient of single nanotubes.…”

Preface to the second special issue on non‐linear Raman spectroscopy and related techniques

“…On the one hand, second-and third-harmonic generation is used for structure analysis, supplementing information from Raman spectroscopy as shown by Konorov et al 23 The non-linear interaction enhances the sensitivity to many important properties of the samples, including spatial symmetry, chirality, local fields and local currents and orientation. On the other hand, investigations of carbon nanotubes by frequency-domain degenerate fourwave mixing are reported by Botti et al 24 The measurements at 355 and 532 nm yield effective 3 values of the order of 10 11 esu and indicate the resonant nature of the excitation involved.…”