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Femtosecond photon echo in dye-doped polymer film at room temperature

✍ Scribed by V. S. Lobkov; K. M. Salikhov; V. V. Samartsev; G. M. Safiullin; V. A. Zuikov

Publisher: John Wiley and Sons
Year: 2006
Tongue: English
Weight: 128 KB
Volume: 3
Category: Article
ISSN: 1612-2011
DOI: 10.1002/lapl.200510042

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✦ Synopsis

The first observation is reported of the primary and
stimulated femtosecond photon echoes at liquid nitrogen and room
temperatures in a dye-doped polymer film at a wavelength of
780 nm. Echo signals were generated by pulses with the duration of
65 fs. The primary echo signal decay at liquid nitrogen and room
temperatures can not be described by a simple exponential
function. The decay of primary echo signal at room temperature
demonstrates complex behavior caused by the presence of the
phonon-side band in the optical band of impurity centers. There
were also detected signals of the self-diffraction of exciting
pulses on a nonequilibrium population difference grating, induced
in resonant medium by these pulses.

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