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Dependence of the Primary and Stimulated Photon Echo Intensity on the Pulse Parameters and the Sample Temperature

В. В. Самарцев, R. G. Usmanov

De Gruyter eBooksDec 31, 19780 citations

Photon Echoes and Degeneration of the Resonant Energy Levels

Leonid A. Nefediev, В. В. Самарцев, A. I. Sirasiev

The influence of the degeneration of the resonant energy levels on the photon echo intensity is investigated.

Spectroscopy LettersJan 1, 19742 citations

Stimulated femtosecond photon echo in a dye-doped polymer film at room temperature

Vladimir S. Lobkov, A V Leontiev, К. М. Салихов +3 more

It is reported about the first observation (in a solid-state sample) and detailed investigation of the stimulated femtosecond photon echo (SFPE) signals at room temperature in a polyvinylbutural film doped with molecules of phthalocyanine of HW 1009 type at the wavelength of 788 nm. A dependence of relative intensity of these echo-signals on time intervals between the second and the third exciting pulses was studied and the SFPE spectrum was investigated with respect to the spectra of both exciting pulses and signals of self-diffraction. It was found that the linear electron-phonon coupling is weak and the influence of the phonon-side band of the absorption line on the SFPE signals is less significantly than on the signals of primary photon echo.It is reported about the first observation (in a solid-state sample) and detailed investigation of the stimulated femtosecond photon echo (SFPE) signals at room temperature in a polyvinylbutural film doped with molecules of phthalocyanine of HW 1009 type at the wavelength of 788 nm. A dependence of relative intensity of these echo-signals on time intervals between the second and the third exciting pulses was studied and the SFPE spectrum was investigated with respect to the spectra of both exciting pulses and signals of self-diffraction. It was found that the linear electron-phonon coupling is weak and the influence of the phonon-side band of the absorption line on the SFPE signals is less significantly than on the signals of primary photon echo.

Laser Physics LettersJun 23, 20069 citations

Femtosecond primary and stimulated photon echoes in a dye-doped polymer film at room temperature

Vladimir S. Lobkov, A. V. Leontiev, К. М. Салихов +4 more

The signals of both primary and stimulated femtosecond photon echoes are observed and investigated in a dye-doped polymer film at room temperature using a modernized femtosecond echo-spectrometer. It should be noted that stimulated photon echo in the solid-state sample is observed for the first time at such a high temperature. Experimentally obtained decay curves of these signals have a nonexponential character. The spectra of these echo signals are also measured. It is found that the spectrum of the primary photon echo is short-wave shifted with respect to the spectrum of excitation. This can be used for the coherent laser cooling of a sample. The spectrum of the stimulated photon echo is also shifted to the short-wave range relative to the spectrum of excitation, but its shift is much less than that of the primary photon echo. The experiment shows that the femtosecond echo signals at room temperature are excited via the phonon-side band of the absorption line.The signals of both primary and stimulated femtosecond photon echoes are observed and investigated in a dye-doped polymer film at room temperature using a modernized femtosecond echo-spectrometer. It should be noted that stimulated photon echo in the solid-state sample is observed for the first time at such a high temperature. Experimentally obtained decay curves of these signals have a nonexponential character. The spectra of these echo signals are also measured. It is found that the spectrum of the primary photon echo is short-wave shifted with respect to the spectrum of excitation. This can be used for the coherent laser cooling of a sample. The spectrum of the stimulated photon echo is also shifted to the short-wave range relative to the spectrum of excitation, but its shift is much less than that of the primary photon echo. The experiment shows that the femtosecond echo signals at room temperature are excited via the phonon-side band of the absorption line.

Laser PhysicsApr 1, 200710 citations

Methods of Theoretical Description of the Formation of Photon Echo and Stimulated Photon Echo Signals in Gases

CRC Press eBooksFeb 24, 20040 citations

Peculiarities of multiple-pulse photon-echo generation in optically dense media

Oleg Kh Khasanov, T. V. Smirnova

OptSpJan 1, 19950 citations

Dependence of the primary and stimulated photon echo intensity on the pulse parameters and the sample temperature

Abstract

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Dependence of the primary and stimulated photon echo intensity on the pulse parameters and the sample temperature

Abstract

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