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Bulletin of the Russian Academy of Sciences Physics

Photon echoes in molecular iodine vapors and nanofilms as a method of optical data processing

I. I. Popov, Н. С. Вашурин, K.Sh. Gazizov, Путилин Сергей Эдуардович, S. A. Stepanov, N. I. Sushensov, Сидорова Вера Тагировна

Published Mar 1, 2012• 4 citations
Publisher

Abstract

Properties and parameters of the photon echoes (PEs) used in optical data processing are analyzed. Physical methods for constructing functional processors and measuring devices on the basis of PE are proposed. Experiments on detecting femtosecond PEs in inorganic nanofilms at the room temperature are described.
DOI
10.3103/s1062873812030240

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The effect of the rotating of the photon echo polarization vector is offered for a construction of the opto-electronic current transformer. As an active medium that allows get the photon echo the vapors of molecular iodine are used. The theoretical model of the opto-electronic current transformer is discussed. The results of investigation of photon echo (PE), excited by complexly coded laser pulses in molecular Iodine vapors under action of the homogeneous longitudinal magnetic field are given in this work. The recording possibility of special information by exciting pulses on a pair of quantum levels of resonant gas (molecular Iodine vapors) in technique PE is shown experimentally. In this shown experiment the information has two by two values of two relevant features and is represented by the amplitude-time shape and direction of linear polarization vector of radiation. The possibility of using the detected features of formation PE under the action of magnetic field for development the physical principles of the quantum control and for optical information processing introduced by hypercomplex number - quaternion - is shown.
The signals of primary and stimulated femtosecond photon echo in polymer films doped with dye (phthalocyanine) molecules have been experimentally investigated at room temperature. A femtosecond echo spectrometer for these echo experiments is described. The decay curves of echo signals with increasing time intervals between excitation femtosecond pulses are obtained and blue shifts of the spectra of femtosecond echo signals with respect to the spectrum of excitation pulses are revealed. The possibilities of using the studied doped polymer films as recording media for high-temperature echo processors and coolants in optical refrigerators are analyzed.