Kazan state Federal University E-Archive :: Browsing by Author "Samartsev V."

Acoustic superradiance

Kopvillem U.; Nagibarov V.; Samartsev V.; Solovarov N. (1976)

This review deals with experimental and theoretical aspects of acoustic superradiance, and also spontaneous coherent radiation of elastic multipoles. B. Peculiarities of sound superradiation excited by pulsed and stationary ...

Acousto-optical wave-fronts transformation under conditions of multi-pulses excitation of three-level system

Samartsev V.; Vlasova D. (2006)

The problem of coherent acousto-to-optic image transformation in solid-state three-level systems is theoretically studied. The graphical method of calculation of coherent responses of such systems is used. Developing method ...

Angular regularities of the photon echo in doped crystals

Kalachev A.; Samartsev V.; Zuikov V.; Rebane A.; Wild U. (1996)

The regularities of the two-pulse photon echo generation in doped crystals under changes in the angle a between directions of propagation of pumping pulses are investigated theoretically. The explanation of some experimental ...

Anti-Stokes femtosecond photon echo in a polymer film

Petrushkin S.; Samartsev V. (2007)

An anti-Stokes model is proposed which explains the room-temperature blue shift of the echo-signal spectrum compared to the spectrum of exciting femtosecond pulses in a polymer film doped with dye molecules. The possibility ...

Anti-Stokes femtosecond photon echo in dye-doped polymer films and the possibility of coherent optical cooling

Vorobyev A.; Petrushkin S.; Samartsev V. (2008)

An anti-Stokes model is proposed to explain the known experimental data on the femtosecond photon echo in dye-doped polymer films at room temperature. The possibility of implementing the anti-Stokes mode of coherent laser ...

Boson operator elimination method in the laser cooling of solids

Petrushkin S.; Samartsev V. (2001)

We use Bogoliubov's boson variabies elimination method to investigate the laser cooling of solid samples. We derive an exact kinetic equation for the quantum description of the laser cooling of glasses and crystals doped ...

Broad-band sources of single-photon pulses, based on spontaneous parametric scattering in nonlinear impurity crystals

Akat'Ev D.; Kalachev A.; Samartsev V.; Latypov I.; Shkalikov A. (2014)

This paper discusses the possibilities of using spontaneous parametric scattering (SPS) in impurity crystals with a periodic domain structure for the efficient generation of narrow-band single-photon pulses. Using a ...

Coherent control of the molecular dynamics in a liquid by femtosecond four-pulse excitation

Nikiforov V.; Lobkov V.; Samartsev V.; Saiko A. (2015)

© 2015 Astro Ltd. The laser non-resonant excitation based on the (2 ×2) sequence of the two pairs of the pump pulses with orthogonal linear polarizations is proposed and theoretically considered for the control of the ...

Coherent influence of RF field on the gamma-optical properties of a medium upon crossing-anticrossing of nuclear levels

Lyubimov V.; Popov E.; Samartsev V.; Kutsenko S.; Polyakov N. (2007)

A new approach to the observation of electromagnetic-induced transparency in gamma optics is proposed. For this purpose, the propagation of a resonant gamma photon in a 57Fe magnetic medium affected by an external ...

Cooperative luminescence and superfluorescence in nanoclusters

Kalachev A.; Kir'yanov A.; Samartsev V. (2008)

The processes of cooperative luminescence and superfluorescence (SF) in nanoclusters, which consist of a few neighbor particles, interacting with each other by exchange or/and electrostatic forces, are investigated ...

Correlated signals of the accumulated photon echo on CdSe - CdS quantum dots

Samartsev V.; Mitrofanova T. (2017)

The possibility of an observation of correlated signals of the accumulated photon echo under a three-photon excitation of a sample, which is an ensemble of semiconductor nanoparticles of "core - shell" type, by a femtosecond ...

Samartsev V.; Mitrofanova T. (2016)

© 2016 Astro Ltd.The possibility and conditions of the correlated signals of stimulated photon echo (SPE) generation under three-photon femtosecond excitation of a sample, which is an ensemble of N semiconductor nanoparticles, ...

DYNAMIC ECHO-HOLOGRAM TRANSFORMATION IN THREE-LEVEL SYSTEMS.

Nefediev L.; Samartsev V. (1985)

Dynamic echo holography is a new field where photon (light) echo signals are used. Under certain conditions, information contained in the wave front of excited pulses can be reproduced in the wave front of echo signals. ...

Electron dynamics at GaAs-AlGaAs heterojunction studied by ultrafast spectroscopy

Leontyev A.; Ivanin K.; Mitrofanova T.; Lobkov V.; Samartsev V. (2013)

In this letter the electron and spin dynamics at GaAs/AlGaAs heterojunction was studied by ultrafast spectroscopy techniques (photon echo and transient grating studies). Relaxation times and diffusion coefficients of ...

Entangled femtosecond free induction signals in a cadmium sulfide crystal at room temperature

Leontiev A.; Lobkov V.; Mitrofanova T.; Samartsev V.; Shmelyov A. (2012)

Entangled free induction decay (EFID) femtosecond signals are experimentally observed for the first time at a wavelength of 790 nm in a cadmium sulfide (CdS) crystal in the two-photon absorption (TPA) regime upon excitation ...

"Entangled" free-induction decay in CdS crystal under two-photon excitation by two crossed laser beams

Leontiev A.; Lobkov V.; Mitrofanova T.; Shmelyov A.; Samartsev V. (2012)

A new method of two-photon excitation of femtosecond signals of "entangled" free induction decay (EFID) by two crossed 790-nm laser beams in a CdS crystal at room temperature has been realized for the first time. This ...

Femtosecond coherent spectroscopy of four-wave mixing and photon echoes in a GaAs/AlGaAs heterostructure at room temperature

Ivanin K.; Leont'Ev A.; Lobkov V.; Safiullin G.; Samartsev V. (2012)

The results from experiments employing coherent femtosecond spectroscopy in a layer of two-dimensional electron gas at the boundary of the GaAs/AlGaAs heterojunction at room temperature are presented. The decay curves of ...

Femtosecond coherent spectroscopy of four-wave mixing and the spectroscopy of transient gratings in GaAs/AlGaAs semiconductor heterostructures at room temperature

Leontyev A.; Ivanin K.; Mitrofanova T.; Samartsev V.; Khasanov O. (2014)

Results from femtosecond coherent spectroscopy of four-wave mixing in GaAs/AlGaAs semiconductor heterostructures at room temperature are presented. Electron diffusivities and their spins are found via spectroscopy of ...

Femtosecond correlated photon echo in CdS crystal under two-photon excitation by two pairs of crossed laser beams

Samartsev V.; Leontiev A.; Mitrofanova T. (2015)

© 2015 Astro Ltd. We consider the possibility of observing a femtosecond correlated photon echo (FCPE) under two-photon excitation of CdS crystal by two pairs of crossed laser beams. The peculiarities of FCPE signals and ...

Femtosecond correlated transient holography in CdS crystal under two-quantum excitation

Samartsev V.; Leontiev A.; Mitrofanova T. (2016)

This paper is devoted to the discussion of a possibility of the femtosecond correlated transient holograms recording in CdS crystal under two-quantum excitation.

Browsing by Author "Samartsev V."

Browsing by Author "Samartsev V."

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