Accession Number : ADP008234

Title :   Ultrafast Dephasing of Resorufin in D-Ethanol Glass from 1.8 - 35 K Studied by Incoherent Photon-Echo,

Corporate Author : AKADEMIYA NAUK SSSR MOSCOW

Personal Author(s) : Gruzdev, N. V. ; Vainer, Yu. G.

Report Date : 22 MAY 1992

Pagination or Media Count : 4

Abstract : Optical dephasing studies of organic glasses and polymers provide the valuable information about an amorphous system's dynamics. In the recent years hole-burning and two-pulse picosecond photon-echo were widely used for these purposes. These method have different characteristic times: minutes and more - for hole-burning, picoseconds - for two-pulse picosecond photon-echo. As a result, in the case of amorphous systems, data obtained by using of these methods correspond to different time scales and are not equivalent. The comparison between the results obtained by these different methods can provide additional information about a dynamical processes in amorphous systems (for example, about spectral diffusion). Up to now the most experimental investigations of optical dephasing in organic glasses and polymers were made at small temperature region and only in two time scales: picosecond and minutes and more. It was interesting to investigate organic amorphous systems in nanosecond and microsecond time regions and at more wide temperature region.

Descriptors :   *POLYMERS, *GLASS, *OPTICAL PROPERTIES, *MOLECULAR SPECTROSCOPY, COMBUSTION, COMPARISON, DIFFUSION, DYNAMICS, ECHOES, MICROSECOND TIME, PHOTONS, PULSES, REGIONS, TEMPERATURE, TIME, OPTICAL MATERIALS, LASER BEAMS, FREQUENCY.

Subject Categories : Ceramics, Refractories and Glass
      Optics
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE