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

Optical Data Storage

Optical data storage based on the long-lived photon echo

В. В. Самарцев

Published Nov 22, 2002• 0 citations
Publisher

Abstract

The phenomenon of the long-lived photon echo (LPE), discovered in a previous paper can be used for optical storage. We discuss the main peculiarities of LPE in a three-level system, one level of which is metastable. The crystals, doped by the rare-earth ions such as Pr/sup 3+/ and Eu/sup 3+/, the Van Vleck paramagnetics, are usually used as the data medium of such optical storage.

DOI
10.1109/ods.1997.606125

Related papers

Long-Lived Photon Echo in Van-Vleck Paramagnetics: Physics and Optical Storage

Vitali V. Samartsev

The results of the own experimental and theoretical investigations of the long-lived photon echo (LPE) are reported. The special type of the resonant media, named as Van-Vleck paramagnetics (for example, LaF3:Pr3+), is used in our experiments. The physical mechanisms of LPE-forming are studied in these experiments. The various problems of the optical storage, using LPE, are discussed.

Spectral Hole-Burning and Related Spectroscopies: Science and Applications•Jan 1, 1994•0 citations

Long-lived photon echo in doped nanocrystals

А. А. Калачев, Daria D. Vlasova

The possibility of increase of the information storage time in optical memory devices based on the long-lived photon echo in rare-earth ion doped crystals provided that the latter are nanometer ones is analyzed. Taking into account that in such materials the information storage time is determined by the population lifetimes of hyperfine sublevels of a ground electron state it is possible to increase it due to the modification of phonon density of states in nanocrystals as compared to bulk crystals.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Mar 3, 2008•1 citation

Multichannel information processing in the optical echo-processors on the basis of Van-Fleck paramagnet crystals

В. А. Зуйков, А. А. Калачев, Каримуллин Камиль Равкатович +4 more

The analysis of various modes of multichannel information recording and readout in conditions of a stimulated (accumulated and long-living) photon echo in the crystals doped with rare earth ions which are known as Van-Fleck paramagnets has been performed in order to utilize them in the operation of low-temperature optical echo-processors.

Bulletin of the Russian Academy of Sciences Physics•Mar 1, 2012•1 citation

Signal Suppression In The Phenomenon Of Long-lived Photon Echo

Nail Akhmediev

The phenomenon of long-lived photon echo (LPE) has attracted much recent attention [1-6]. This interest stems from the possible application of this phenomenon in high-capacity optical memory devices (OMD) [7-8]. At present many fundamental problems crucial to the construction of an operating device are solved. The possibility of multiple information read out without refresh is shown theoretically [9] and experimentally [5,10]. Resonant media with storage times of the order of tens of hours and more have been investigated [4,5].Nevertheless, up to now it has not been clear whether it is possible to selectively erase information in an arbitrary memory cell of OMD. It was pointed out for the first time in Ref. [ 11] that it is in principle possible to erase information with random access using LPE signal suppression. We investigate the effect of LPE signal suppression in this work in more detail, and propose a simple technique for random access information erasing.

Digest on Nonlinear Optics: Materials, Phenomena and Devices•Jan 1, 1990•0 citations

Long-lived photon echo: graphical method of calculation

Alexei A. Kalachev, Самарцев Виталий Владимирович, D. D. Vlasova

The paper is devoted to the phenomenon of a long-lived photon echo (LLPE). The graphical method of calculation of optical echo signals in multilevel systems is developed. Using developed method the formation of LLPE signals in Van Vleck paramagnets is investigated.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Apr 20, 2004•0 citations

Optical memory based on the long-lived photon echo and optical superradiance in crystals doped by rare-earth ions

Самарцев Виталий Владимирович, Alexei A. Kalachev

Journal of Luminescence•Jul 1, 2002•0 citations
The phenomenon of the long-lived photon echo (LPE), discovered in a previous paper can be used for optical storage. We discuss the main peculiarities of LPE in a three-level system, one level of which is metastable. The crystals, doped by the rare-earth ions such as Pr/sup 3+/ and Eu/sup 3+/, the Van Vleck paramagnetics, are usually used as the data medium of such optical storage.
The possibility of increase of the information storage time in optical memory devices based on the long-lived photon echo in rare-earth ion doped crystals provided that the latter are nanometer ones is analyzed. Taking into account that in such materials the information storage time is determined by the population lifetimes of hyperfine sublevels of a ground electron state it is possible to increase it due to the modification of phonon density of states in nanocrystals as compared to bulk crystals.
The phenomenon of long-lived photon echo (LPE) has attracted much recent attention [1-6]. This interest stems from the possible application of this phenomenon in high-capacity optical memory devices (OMD) [7-8]. At present many fundamental problems crucial to the construction of an operating device are solved. The possibility of multiple information read out without refresh is shown theoretically [9] and experimentally [5,10]. Resonant media with storage times of the order of tens of hours and more have been investigated [4,5].Nevertheless, up to now it has not been clear whether it is possible to selectively erase information in an arbitrary memory cell of OMD. It was pointed out for the first time in Ref. [ 11] that it is in principle possible to erase information with random access using LPE signal suppression. We investigate the effect of LPE signal suppression in this work in more detail, and propose a simple technique for random access information erasing.