Quantum Electronics

Multiple readout of long-lived photon echo signals and nuclear relaxation

В. А. Зуйков, А. А. Калачев, L. A. Nefedev, В. В. Самарцев

Published Mar 31, 1996• 1 citation

Abstract

The relaxation decay of long-lived stimulated photon echo signals in a Pr 3+ :LaF 3 crystal was found to be independent of the number of readout pulses when the area under these pulses was small. A theoretical description of this effect is provided and a good agreement between the theory and experiment is reported.

DOI: 10.1070/qe1996v026n03abeh000644

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Quantum Electronics

Multiple readout of long-lived photon echo signals and nuclear relaxation

В. А. Зуйков, А. А. Калачев, L. A. Nefedev, В. В. Самарцев

Published Mar 31, 1996• 1 citation

Publisher

Abstract

DOI: 10.1070/qe1996v026n03abeh000644

Related papers

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Soviet Journal of Quantum ElectronicsApr 30, 19914 citations

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Edward A. Manykin, N. V. Znamenskiı̆, D. V. Marchenko +2 more

Conference on Lasers and Electro-OpticsMay 8, 19940 citations

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Шегеда Анатолий Михайлович, B. M. Khabibullin, V. N. Lisin +2 more

A strong decreasing of the intensity of the inverse 2-pulse, 3-pulse and long lived 3-pulse photon echo was observed when a current pulse passed through the strip evaporated onto the surface of the sample (current pulse was applied before or after the laser pulses). The strip is heated by the current pulse and there is the voltage difference at the ends of the strip. The voltage difference creates instantly the nonuniform electric field in the region of optical excitation so the echo intensity is decreased by the short-lived nonuniform line width rise. The line width rise is differentiated for the distinct type ion sites in the LaF3 unit cell. The strip current-heating gives rise to a phonon pulse. When phonon pulse reaches the optically excited volume it causes the shift of energy levels of Pr3+ ions, effecting a phase accumulation and the echo intensity change as a consequence.A strong decreasing of the intensity of the inverse 2-pulse, 3-pulse and long lived 3-pulse photon echo was observed when a current pulse passed through the strip evaporated onto the surface of the sample (current pulse was applied before or after the laser pulses). The strip is heated by the current pulse and there is the voltage difference at the ends of the strip. The voltage difference creates instantly the nonuniform electric field in the region of optical excitation so the echo intensity is decreased by the short-lived nonuniform line width rise. The line width rise is differentiated for the distinct type ion sites in the LaF3 unit cell. The strip current-heating gives rise to a phonon pulse. When phonon pulse reaches the optically excited volume it causes the shift of energy levels of Pr3+ ions, effecting a phase accumulation and the echo intensity change as a consequence.

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Multipulse photon echoes in LaF3 : Pr3+

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Multipulse photon echoes are observed from ${\mathrm{LaF}}_{3}$ : ${\mathrm{Pr}}^{3+}$ and are shown to be primarily stimulated echoes. The various contributions to the echoes were measured using a three-pulse photon-echo sequence that resolved the image of the echo generated by the first two pulses, and the echo generated by the second and third pulses and that of the first and third pulses from the stimulated echo. By use of a theoretical model of Shoemaker [in Laser and Coherence Spectroscopy, edited by J. I. Steinfeld (Plenum, New York, 1978)] and relaxation theory of Hu and Hartmann [Phys. Rev. B 9, 1 (1974)], the image echo contributions to the third echo is shown to be less than 10% of the total for the pulse widths and Rabi frequencies used in the measurements. As a result, multipulse photon echoes will find limited use in measuring coherence decay until very short high-intensity pulses are used to excite the echoes.Multipulse photon echoes are observed from ${\mathrm{LaF}}_{3}$:${\mathrm{Pr}}^{3+}$ and are shown to be primarily stimulated echoes. The various contributions to the echoes were measured using a three-pulse photon-echo sequence that resolved the image of the echo generated by the first two pulses, and the echo generated by the second and third pulses and that of the first and third pulses from the stimulated echo. By use of a theoretical model of Shoemaker [in Laser and Coherence Spectroscopy, edited by J. I. Steinfeld (Plenum, New York, 1978)] and relaxation theory of Hu and Hartmann [Phys. Rev. B 9, 1 (1974)], the image echo contributions to the third echo is shown to be less than 10% of the total for the pulse widths and Rabi frequencies used in the measurements. As a result, multipulse photon echoes will find limited use in measuring coherence decay until very short high-intensity pulses are used to excite the echoes.

Physical Review ANov 1, 19924 citations

Multipulse photon echoes are observed from

{\mathrm{LaF}}_{3}

{\mathrm{Pr}}^{3+}

and are shown to be primarily stimulated echoes. The various contributions to the echoes were measured using a three-pulse photon-echo sequence that resolved the image of the echo generated by the first two pulses, and the echo generated by the second and third pulses and that of the first and third pulses from the stimulated echo. By use of a theoretical model of Shoemaker [in Laser and Coherence Spectroscopy, edited by J. I. Steinfeld (Plenum, New York, 1978)] and relaxation theory of Hu and Hartmann [Phys. Rev. B 9, 1 (1974)], the image echo contributions to the third echo is shown to be less than 10% of the total for the pulse widths and Rabi frequencies used in the measurements. As a result, multipulse photon echoes will find limited use in measuring coherence decay until very short high-intensity pulses are used to excite the echoes.