Anomalous Hole Burning in Polymers with Inhomogeneous Broadening
Abstract
For inhomogeneously broadened media such as polydiacetylene 4BCMU films, a phenomenological model is proposed to calculate the imaginary part of the optical susceptibility as a function of the pump field intensity. It is shown that the model can qualitatively account for the anomalous behavior of the absorption hole observed in recent experiments. Possible cause of the anomaly is discussed. Studies of transient optical effects have become important in the development of coherent optical spectroscopy and fast response nonlinear optical materials. Many experiments have been carried out by the pump-probe technique in which the strong pump laser induces the nonlinear optical response of the sample to be examined by the weak probe laser. Spectral hole burning or bleaching accompanied by a dynamical Stark shift has been observed in such experiments on various materials such as semiconductor quantum wells and conjugated polymers.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1991
- Accession Number
- ADA242397
Entities
People
- Dong Lin
- Thomas F. George
- Xiangchong Li
Organizations
- Washington State University