Frequency Dependence of Two-Photon Resonances and Damping in Polymers
WASHINGTON STATE UNIV PULLMAN DEPT OF CHEMISTRY
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For the two photon resonance in the third-harmonic generation THG spectrum of trans-polyacetylene, the existing theories can only qualitatively rather than quantitatively explain the experimental data. In this paper a damping mechanism is proposed. It shows that once the excitation-dependent damping is taken into account, the whole experimental spectrum of the THG can be quantitatively interpreted by our theoretical calculations.
- Polymer Chemistry
- Atomic and Molecular Physics and Spectroscopy