Ultrafast time response of optical nonlinearity in polysilane polymers
- 3 October 1988
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 53 (14), 1245-1247
- https://doi.org/10.1063/1.99991
Abstract
Ultrafast relaxation kinetics of third-order nonlinear susceptibility χ(3) of polysilane polymers was measured using both the picosecond Kerr gate and forward degenerated four-wave mixing. The relative contributions from various nonlinear decay mechanisms were estimated from the time response. The third-order nonlinear response was measured to be faster than 3 ps arising from electronic mechanism. A slower component is assigned to the refractive index grating due to light pressure.Keywords
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