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EPJ Web of Conferences

Polarization properties of superposition states of the quantum transition of molecular iodine vapor in a magnetic field and their possible application

K.Sh. Gazizov, I.I. Popov

Published Jan 1, 2017• 0 citations
Publisher

Abstract

This paper considers the problem of the possibility of creating a technology for constructing a high-speed high-precision laser lidar based on the physics of the non-Faraday rotation effect of the polarization plane of the primary photon echo in molecular iodine vapor at room temperature. A method is proposed for increasing the range of distance measurements by combining the capabilities of an optical echo-range lidar and an optical time-pulse range lidar.

DOI
10.1051/epjconf/201716103009

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This paper considers the problem of the possibility of creating a technology for constructing a high-speed high-precision laser lidar based on the physics of the non-Faraday rotation effect of the polarization plane of the primary photon echo in molecular iodine vapor at room temperature. A method is proposed for increasing the range of distance measurements by combining the capabilities of an optical echo-range lidar and an optical time-pulse range lidar.
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.
Given work is devoted to investigation of effect of non-Faraday rotation of polarization vector of a photon echo at influence of a constant magnetic field on the resonant environment (molecular iodine vapors) in a longitudinal direction1-4. Magnetic field was created by the solenoid. The time interval between excite pulses accepts one of the fixed values. Experimental devices for detection of non-Faraday rotation of polarization vector of photon echo are developed and experimental dependences of an angle of this rotation from the value of magnetic field intensity and electric current are received. The method on the basis of a photon echo of intensity registration of magnetic field and electric current is developed. Accuracy of magnetic field parameters registration on the basis of the offered method of measurement is determined. Recommendations to use this method for the control of current of electro transmission line are produced.
A retrospective review of both theoretical and experimental works on photon echo in gases in the presence of longitudinal magnetic fields is presented from the viewpoint of new possibilities opened by this research for polarization echo spectroscopy of gases. The main attention is given to the physical scenario of the magnetic field’s effect on the properties of the photon echo. New results on the photon echo and stimulated photon echo in ytterbium vapor at the 1 ↔ 0 transition in the presence of the longitudinal magnetic field whose strength ranges from weak to strong are presented. Possible applications of the magnetic field effects for optical data storage and processing are analyzed.
Visual method of identification of the branch type of resonant transition is suggested in this paper. The method is basedon the measurement ofratio ofprimary photon echo amplitude to stimulated photon echo amplitude in the magnetic field,when the effect of non-Faraday rotation of the photon echo polarization vector is occurred. The experimental results ofidentification of the resonant transitions in the vapor of molecular iodine are demonstrated. The results were checked bythe measurement ofthe maximum rotation angle range ofprimary photon polarization vector. This parameter is similarlycharacterized the resonam transition. For the first time fact ofregistration ofthe non-Faraday rotation polarization vectorofstimulated echo, formed on the different resonant transitions (Q-branch or P(R)-hranch), is reported.Keywords: primary photon echo, stimulated photon echo, identification of the resonant transitions, non-Faraday rotationof the photon echo polarization, vapors of molecular iodine, magnetic field, Q -