Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Bulletin of the Russian Academy of Sciences Physics

Photon echoes as means of studying defective surface structure of the crystal fibers of thin films

Н. С. Вашурин, I. I. Popov, Путилин Сергей Эдуардович

Published May 1, 2017• 3 citations
Publisher

Abstract

Dependences of the decay of stimulated photon echoes excited in thin textured p - and n -type zinc oxide and silicon films characterized by different sizes of crystal fibers are studied. Two characters of recombination were revealed for localized excitons on crystal lattice defects, presented in the studied dependences in the form of fast and slow decay components.

DOI
10.3103/s1062873817050264

Related papers

Photon echo on excitons for the development of nanoelectronic devices based on a quantum-size structures in a thin zinc oxide films

I. I. Popov, Roman V. Yusupov, A. V. Petrov +3 more

The relaxation decays of photon echo signals in thin zinc oxide films produced by magnetron sputtering have been studied. Echo signals are excited at a wavelength of 800 nm at transitions between quantum levels that arise when excitonic states are localized in quantum-sized structures in the two-photon absorption mode of laser pulses with a wavelength of 800 nm.

Известия Российской академии наук Серия физическая•Feb 15, 2024•0 citations

Magneto-optical properties of the photon echo: status of research and prospects of application

I.I. Popov, А. У. Бахадуров, Н. С. Вашурин +4 more

The results of the study of the polarization properties of the stimulated photon echo (SPE) excited at room temperature on free excitons and exciton states localized on surface defects of textured thin films are reported. The results of observation and investigation of the effect of the non-Faraday rotation of a femtosecond SPE in a textured thin film are presented. The physical processes occurring under the Faraday effect and the effect of the non-Faraday rotation of the photon echo (PE) polarization plane are compared.

EPJ Web of Conferences•Jan 1, 2017•0 citations

Using Photon Echoes for the Femtosecond Magneto-Optical Spectroscopy of Thin Textured Films

I. I. Popov, Н. С. Вашурин, Evgeny A. Vinogradov +3 more

Periodic modulation of the decay of a stimulated photon echo (SPE), formed in a three-layer textured thin ZnO/Si (P)/Si(B) film with a longitudinal uniform magnetic field upon increasing the time interval between the exciting pulses, is recorded in experiments. The shape of the modulated SPE decay curve changes for different values of time interval between the first two exciting pulses. The g -factor of the quantum transition is estimated from the period of modulation. The value of the g -factor is used to reach a conclusion on the formation of photon echoes on localized complex exciton states of the trion type.

Bulletin of the Russian Academy of Sciences Physics•Aug 1, 2018•1 citation

Principles of Photon Echo Formation on Special Exciton States in Thin Textured Films at Room Temperature

I. I. Popov, A. U. Bakhodurov, Н. С. Вашурин +5 more

Abstract A way of obtaining new thin-film materials for forming photon echoes at room temperature on special exciton states in thin textured films obtained via magnetron sputtering is proposed, along with a model that explains the properties of new states and is associated with the formation of special exciton states. The dependence of the relaxation times of resonant transitions on the size of nanoscale clusters of surface defects is investigated for different film thicknesses and various semiconductor materials. Prospects for using such materials in medical technology are determined.

Bulletin of the Russian Academy of Sciences Physics•Dec 1, 2018•2 citations

Photon Echo on Excitons and Its Role in the Development of Nanoelectronic Devices Based on Quantum-Sized Structures in Thin Zinc Oxide Films

I. I. Popov, Roman V. Yusupov, A. V. Petrov +3 more

Abstract The relaxation decays of photon echo signals in thin zinc oxide films produced by magnetron sputtering were studied. Echo signals are excited at a wavelength of 800 nm by transitions between quantum levels that arise when excitonic states are localized in quantum-sized structures by two-photon absorption mode of laser pulses with a wavelength of 800 nm.

Bulletin of the Russian Academy of Sciences Physics•Feb 1, 2024•0 citations

Long–lived femtosecond photon echo in thin films on localized exciton states at room temperature

Н. С. Вашурин, V. O. Kompanets, I.I. Popov +2 more

Long–lived femtosecond photon echo was excited at room temperature in a two–photon regime on the charged exciton states (trion type) localized on the surface defects of a three–layer textured ZnO/Si(B)/Si(P) film with the thickness of each layer at 100 nm in a longitudinal uniform magnetic field. The irreversible longitudinal relaxation time T1 for the long–lived photon echo regime was of the order of 40 ps, whereas when measured with the help of the stimulated photon echo generated in the single–photon mode, the value was found not to exceed 600 fs.

EPJ Web of Conferences•Jan 1, 2017•0 citations
Dependences of the decay of stimulated photon echoes excited in thin textured p - and n -type zinc oxide and silicon films characterized by different sizes of crystal fibers are studied. Two characters of recombination were revealed for localized excitons on crystal lattice defects, presented in the studied dependences in the form of fast and slow decay components.
The results of the study of the polarization properties of the stimulated photon echo (SPE) excited at room temperature on free excitons and exciton states localized on surface defects of textured thin films are reported. The results of observation and investigation of the effect of the non-Faraday rotation of a femtosecond SPE in a textured thin film are presented. The physical processes occurring under the Faraday effect and the effect of the non-Faraday rotation of the photon echo (PE) polarization plane are compared.
Periodic modulation of the decay of a stimulated photon echo (SPE), formed in a three-layer textured thin ZnO/Si (P)/Si(B) film with a longitudinal uniform magnetic field upon increasing the time interval between the exciting pulses, is recorded in experiments. The shape of the modulated SPE decay curve changes for different values of time interval between the first two exciting pulses. The g -factor of the quantum transition is estimated from the period of modulation. The value of the g -factor is used to reach a conclusion on the formation of photon echoes on localized complex exciton states of the trion type.
Abstract A way of obtaining new thin-film materials for forming photon echoes at room temperature on special exciton states in thin textured films obtained via magnetron sputtering is proposed, along with a model that explains the properties of new states and is associated with the formation of special exciton states. The dependence of the relaxation times of resonant transitions on the size of nanoscale clusters of surface defects is investigated for different film thicknesses and various semiconductor materials. Prospects for using such materials in medical technology are determined.
Long–lived femtosecond photon echo was excited at room temperature in a two–photon regime on the charged exciton states (trion type) localized on the surface defects of a three–layer textured ZnO/Si(B)/Si(P) film with the thickness of each layer at 100 nm in a longitudinal uniform magnetic field. The irreversible longitudinal relaxation time T1 for the long–lived photon echo regime was of the order of 40 ps, whereas when measured with the help of the stimulated photon echo generated in the single–photon mode, the value was found not to exceed 600 fs.