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

17th Congress of the International Commission for Optics: Optics for Science and New Technology

Storage and associative recall of images by stimulated photon echoes

Yong R. Kim

Published Sep 1, 1996• 0 citations
Publisher

Abstract

The photon echo is unique among nonlinear optical effects in that it involves interference and diffraction in both space and time domain. This intrinsic spatio-temporal property offers multitude of interesting and useful applications in optical storage and processing of temporally as well as spatially encoded data. In this paper we consider the possibility of using stimulated photon echo (SPE) to implement all-optical associative memory of spatial data.

DOI
10.1117/12.2299155

Related papers

Spectral programming of temporal pulse sequences using photon echoes

B. Luo, Ulf Elman, Stefan Kröll +1 more

Optical memories based on spectral hole burning (SHB) and stimulated photon echoes (SPE) are attracting much attention. Both approaches add an extra dimension for addressing (frequency and temporal dimension respectively) to the spatial dimensions. With these concepts the storage density can become 103 – 106 times higher than in conventional optical memories. In both approaches, the ratio of the inhomogeneous line width to the homogeneous line width of the ions activated in the storage process determines the improvement in storage density. Compared to the SHB approach, SPE has certain advantages including high R/W rate and ability to process the stored (spatial as well we temporal) information. Using SPE, the authors have experimentally realised the AND, OR and NOT logical operations [1,2]. Further all optical processing, such as temporal pattern recognition, can be done using SPE.

Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)•Jan 1, 1996•0 citations

Time-Frequency Domain Memory and Processing

David L. Huestis, Gregory W. Faris, E. Arons

This report summarizes the results of a 3-year program of research on the physics and technology needed to develop high-performance optical memory and optical processing systems based on the concept called the stimulated photon echo (SPE). The research goals were investigation, demonstration, and improvement of signal strength and fidelity, architectures and algorithms, and materials properties for optical storage and in-memory processing. Key accomplishments were (1) development and demonstration of efficient algorithms for threshold discrimination and bit-error-rate reduction in retrieved binary images with large in-frame and frame-to-frame intensity variations; (2) demonstration and characterization of information storage in Erbium-doped crystals using 1.5-micron diode lasers compatible with fiber optic communications; (3) demonstration of improved phase-encoding schemes for in-memory temporal correlation of 1.5-micron pulse trains; (4) development of concepts for high-performance radar applications based on SPE optical memory for time-delay control of the transmitter array and in-memory image processing of the return signals; and (5) hosting the AFOSR Contractors' Meeting, "Optoelectronic Information Processing."

•Feb 28, 2002•0 citations

Stimulated photon echo with temporal data coding in the Hopfield-Little regime

V. E. Vorobieva, А. А. Калачев, В. В. Самарцев

A model of an optical neural network with associative memory using stimulated photon echo (SPE) with temporal data coding is presented. The electrical field’s calculation of the SPE signals is carried out for case of multiple influences on the resonant medium by optical pulses. A computer model of an optical echo processor with associative retrieval of information is elaborated.

Bulletin of the Russian Academy of Sciences Physics•Dec 1, 2009•0 citations

Optical associative memory based on an echo correlator

M. Belov, Edward A. Manykin

A physical principle of the associative-memory optical implementation by using the photon-echo effect is proposed. The properties inherent in this phenomenon permit an optical scheme similar to the nonlinear holographic associative memory [Appl. Opt. 26, 1900 (1987)] to be considered. The associative-memory system based on the photon-echo effect uses a temporal selectivity instead of a spatial one.

Optics Letters•Mar 1, 1991•5 citations

Methods of optical information processing based on the accumulated-stimulated and modified-stimulated photon echo

Eduard A. Manykin, Sergey M. Zakharov

Dynamic spatial and temporal properties of accumulated stimulated and modified stimulated photon echoes are considered. Possible applications to optical information processing systems for the temporal compression of the recorded information, the erasure of information, as well as for the correlation analysis of optical images are discussed.© (1993) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Jul 12, 1993•0 citations

Electronic simulation of the temporal characteristics of photon memory echoes and some related applications

Yu-Wen Kuo, Monish R. Chatterjee

The characteristics of nonlinear photon memory echoes are investigated by means of SPICE simulations using equivalent resonator ensembles. By developing implicit nonlinear circuit models in the memory echo domain, the triple product formalism of electronic holography, involving correlation and convolution, is tested for the storage and recall of arbitrary signals and/or data bit streams in both time-inverted and nontime-inverted modes. Furthermore, a few specific optical data processing applications are also simulated in which the mixed binary multiplication of two or more binary bit streams is achieved. Higher order products, optical pattern recognition, and other possible applications are also discussed. It is shown that much insight into the nature and scope of optical photon echoes as memory storage phenomena may be derived using the electronic simulation technique.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Jan 21, 1994•0 citations
The photon echo is unique among nonlinear optical effects in that it involves interference and diffraction in both space and time domain. This intrinsic spatio-temporal property offers multitude of interesting and useful applications in optical storage and processing of temporally as well as spatially encoded data. In this paper we consider the possibility of using stimulated photon echo (SPE) to implement all-optical associative memory of spatial data.
Optical memories based on spectral hole burning (SHB) and stimulated photon echoes (SPE) are attracting much attention. Both approaches add an extra dimension for addressing (frequency and temporal dimension respectively) to the spatial dimensions. With these concepts the storage density can become 103 – 106 times higher than in conventional optical memories. In both approaches, the ratio of the inhomogeneous line width to the homogeneous line width of the ions activated in the storage process determines the improvement in storage density. Compared to the SHB approach, SPE has certain advantages including high R/W rate and ability to process the stored (spatial as well we temporal) information. Using SPE, the authors have experimentally realised the AND, OR and NOT logical operations [1,2]. Further all optical processing, such as temporal pattern recognition, can be done using SPE.
This report summarizes the results of a 3-year program of research on the physics and technology needed to develop high-performance optical memory and optical processing systems based on the concept called the stimulated photon echo (SPE). The research goals were investigation, demonstration, and improvement of signal strength and fidelity, architectures and algorithms, and materials properties for optical storage and in-memory processing. Key accomplishments were (1) development and demonstration of efficient algorithms for threshold discrimination and bit-error-rate reduction in retrieved binary images with large in-frame and frame-to-frame intensity variations; (2) demonstration and characterization of information storage in Erbium-doped crystals using 1.5-micron diode lasers compatible with fiber optic communications; (3) demonstration of improved phase-encoding schemes for in-memory temporal correlation of 1.5-micron pulse trains; (4) development of concepts for high-performance radar applications based on SPE optical memory for time-delay control of the transmitter array and in-memory image processing of the return signals; and (5) hosting the AFOSR Contractors' Meeting, "Optoelectronic Information Processing."
The characteristics of nonlinear photon memory echoes are investigated by means of SPICE simulations using equivalent resonator ensembles. By developing implicit nonlinear circuit models in the memory echo domain, the triple product formalism of electronic holography, involving correlation and convolution, is tested for the storage and recall of arbitrary signals and/or data bit streams in both time-inverted and nontime-inverted modes. Furthermore, a few specific optical data processing applications are also simulated in which the mixed binary multiplication of two or more binary bit streams is achieved. Higher order products, optical pattern recognition, and other possible applications are also discussed. It is shown that much insight into the nature and scope of optical photon echoes as memory storage phenomena may be derived using the electronic simulation technique.