Temperature dependence of the third-order nonlinear optical susceptibilities in polysilanes and polygermanes
- 26 September 1988
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 53 (13) , 1147-1149
- https://doi.org/10.1063/1.100040
Abstract
Optical third‐harmonic generation was used to measure third‐order nonlinear susceptibilities χ(3) for thin films of planar zigzag polysilanes and polygermanes. A χ(3) of 11.3×10−12 esu was measured, the largest value ever reported for a polymer with transparency throughout the visible. The value of χ(3) was found to vary substantially with thermally induced reversible changes in polymer backbone conformation and also with film thickness.Keywords
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