Time Dependent Hole Burning and Optical Coherence Experiments as Probes of Spectral Diffusion in Low Temperature Glasses,
Abstract
Dynamics and interactions in low temperature glasses can be studied with optical line narrowing techniques applied to chromophores embedded in glassy hosts. Prior to the use of optical methods, a wide variety of classical methods, such as heat capacities, were applied to the study of glasses. Results have been, successfully interpreted in terms of a model of. the glass potential surface described in terms of Two Level Systems (TLS). Because of the very large extent of inhomogeneous broadening in glassy systems, it is necessary to apply line narrowing methods to provide information on the dynamics and interactions of atoms and molecules with their environments. A number of optical line narrowing methods have been developed to remove inhomogeneous broadening. Among these are hole burning, fluorescence line-narrowing, accumulated grating echoes, stimulated photon echoes, and photon echoes. The photon echo and the stimulated photon echo are the direct optical analogs of the magnetic resonance spin echo and stimulated spin echo.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 22, 1992
- Accession Number
- ADP008230
Entities
People
- Michael D. Fayer
Organizations
- Stanford University