Statistical Fine Structure of Inhomogeneously Broadened Absorption Lines.
Abstract
Using laser frequency-modulation spectroscopy; we have observed statistical fine structure (SFS) in the inhomogeneously broadened optical absorption of pentacene in p-terphenyl at liquid helium temperatures. SFS is the actual frequency-dependent, time-independent structure of the inhomogeneous line caused by the randomly varying number of centers in each frequency interval. The size of the SFS varies as the square root of the number of centers, and the autocorrelation of the SFS yields and estimate of the homogeneous linewidth without requiring spectral hole-burning or coherent transients. Keywords: Spectroscopy of defects in solids; Molecular spectroscopy; Statistical effects.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 31, 1987
- Accession Number
- ADA183652
Entities
People
- T. P. Carter
- W. E. Moerner
Organizations
- International Business Machines Corporation (Armonk, NY)