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Femtosecond echo-processing in a dye-doped polymer film at room temperature

✍ Scribed by G.M. Safiullin; V.G. Nikiforov; V.S. Lobkov; V.V. Samartsev; A.V. Leontiev

Publisher: John Wiley and Sons
Year: 2009
Tongue: English
Weight: 187 KB
Volume: 6
Category: Article
ISSN: 1612-2011
DOI: 10.1002/lapl.200910060

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✦ Synopsis

The possibility to mechanize at room temperature a logical function of bit-to-bit parallel multiplication for optical echo-processor based on the third-order nonlinear optical response of a resonant medium is experimentally studied. The polyvinilbutural film doped with phthalocyanine dye was used as an operating medium in our experiments. The time needed to realize the logical operation, the result of which is presented in the spectrum of the nonlinear optical response of the medium after action of the two spectrally coded pumping pulses, is less than 1 ps. The values of a homogeneous broadening of S 0 -S 1 line Γ hom = 89 cm -1 and Γ hom = 44 cm -1 are established at T = 300 K and T = 77 K respectively. The laser excitation parameters needed for effective operating of optical processor are defined. The maximum word length achievable under current experimental conditions is estimated.

Intensity, a.u.

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