Accession Number:

ADA255333

Title:

Photochemical and Photophysical Dynamics of Persistent Spectral Hole-Burning, Photorefractivity and Single Molecular Absorbers in Condensed Matter

Descriptive Note:

Final rept. 1984-1992

Corporate Author:

IBM RESEARCH DIV SAN JOSE CA

Personal Author(s):

Report Date:

1992-08-31

Pagination or Media Count:

7.0

Abstract:

During the period of this contract, the following milestones have been achieved the first detailed studies of hole-burning bottlenecks for organic and inorganic systems first use of high resolution ultrasonic modulation to detect photochemical holes first observation of photochemical hole production in 100 ns first complete analysis of coupled reading-writing constraints for single-photon hole-burning materials leading to the need for photon-gating first observation of photon-gated hole-burning in an organic system first observation of photon-gating via a donor-acceptor electron transfer mechanism, which allows fast 30 ns hole formation in small focused laser spots first observation of statistical fine structure in an inhomogeneously broadened spectral line first optical detection and spectroscopy of a single impurity molecular in a solid first temperature dependence of photon-gating to 90 K first intracavity second harmonic generation in an organic crystal first phase-sensitive, time-resolved study of ballistic phonon propagation in a solid first direct observation of spectral diffusion in a solid using a single-molecule probe.

Subject Categories:

  • Organic Chemistry
  • Radiation and Nuclear Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE