Title

Measurement Of Chi(3)(-Omega3;Omega1,Omega1,-Omega2) Spectra For Poly[3-Tetradecylthiophene]

Abstract

We demonstrate that the Maker fringe technique can be applied to third order frequency mixing experiments designed to measure the electronic χ(3)(- approximately ega 3; approximately ega1, approximately ega1,- approximately ega2) dispersion with approximately ega1 for a poly[3-tetradecylthiophene] thin film. Both the magnitude and the phase of the χ(3) were obtained. In the magnitude spectrum there was a strong three-photon resonance where the output frequency (approximately ega3=2 approximately ega1- approximately ega2) corresponds to the energy level of the first one photon state. We also found a peak which could be either a 2 approximately ega1 or a Δ approximately ega (= approximately ega1- approximately ega2) resonance. Since this method is considered to be more sensitive to two-photon resonances that third harmonic generation, it can be used as a powerful tool to probe two photon states in the case of thin film polymer samples.

Publication Date

1-1-1993

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

1852

Number of Pages

106-112

Document Type

Article; Proceedings Paper

Identifier

scopus

Personal Identifier

scopus

Socpus ID

0027226759 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0027226759

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