© 2026 Aqora Quantum S.A.S.

Terms Privacy Legal Notice

Spectral Hole-Burning and Related Spectroscopies: Science and Applications

Holeburning Holography in Eu3+:Y2SiO5 crystal

Hiroko Sasaki, Koichi Karaki, Masaharu Mitsunaga, N. Uesugi

Published Jan 1, 1994• 0 citations

Abstract

Holeburning holography is an ultrahigh density image storage technique. Since the memory capacity is governed by the ratio of the inhomogeneous-to-homogeneous linewidths, 103~106 images can be recorded in a single sample spot. An extensive study on holebuming holography has been carried out by Wild et.al for organic dye-doped polymer samples1-4. On the other hand, holeburning holography has not been carried out for crystal samples, because there are few crystals exhibiting persistent holes. We have performed holeburning holography to record images for Eu3+:Y2SiO5 crystal which has been known for exhibiting persistent holes. Moreover, Eu3+:Y2SiO5 has other unique features5,6 such as narrow holewidth and high holeburning quantum efficiency. By using this crystal, we have also succeeded in real-time recording of a moving object.

DOI: 10.1364/shbs.1994.fd2

Related papers

Holographic motion picture obtained by using Eu 3+ :Y 2 SiO 5

Hiroko Sasaki, Koichi Karaki, Masaharu Mitsunaga

Holographic image storage in an inhomogeneously boadened absorption line of a persistent spectral-hole-burning material has been studied extensively.1 The great wavelength-multiplexing capability of a hole-burning material permits the storage of 103 –106 images in the same spatial area of a medium. Therefore, hole-burning holography is expected to be an ultrahigh-density image-storage technique. More than 2000 images have been successfully stored in organic-dye-doped polymer samples.1

Conference on Lasers and Electro-Optics•May 21, 1995•0 citations

Spectral Hole-Burning and Holography in a Y2SiO5:Pr3+ Crystal

Keith Holliday, Mauro Croci, Eric Vauthey +1 more

Plane wave holography is a method of producing and detecting weak spectral holes with very low background [1]. Its success relies upon hole-burning materials of excellent optical quality with strongly absorbing zero phonon lines such as dye doped polymers which have been extensively studied [2 and references therein]. Through an extension of this technique, image storage [3] and data manipulation [4] have been demonstrated in such materials. Here, we report the application of plane wave holography to a crystalline material, Y2SiO5:Pr3+, for the first time. Spectroscopic measurements of Y2SiO5:Pr3+ have not previously been reported.

Spectral Hole-Burning and Related Spectroscopies: Science and Applications•Jan 1, 1992•4 citations

Holographic motion picture by Eu^3+:Y_2SiO_5

Masaharu Mitsunaga, Hiroko Sasaki, Koichi Karaki +1 more

Real-time recording of a moving object was made with persistent spectral hole burning of a cryogenic Eu(3+):Y(2)SiO(5) crystal. In a basic holographic configuration the ultrastable laser frequency was continuously scanned within the (7)F(0)-(5)D(0) absorption line (typically 200 MHz in 20 s) while the object was in motion, thus permitting the storage and reconstruction of the moving image. The success of this motion picture is attributable to (1) the kilohertz-wide hole width, (2) the quasi-persistent hole lifetime, and (3) the high hole-burning quantum efficiency of this material.

Optics Letters•May 15, 1994•34 citations

Direct pattern recognition of a motion picture by hole-burning holography of Eu^3+:Y_2SiO_5

Hiroko Sasaki, Koichi Karaki

We propose and demonstrate a novel technique for direct pattern recognition of motion pictures based on frequency- and spatial-domain holography using a cryogenic Eu(3+):Y(2)SiO(5) crystal. The fast hole-burning speed of the crystal allows a moving image to be continuously recorded in it by a frequency-scanned laser. Using Fourier transform holography permitted direct pattern recognition of a 25-s movie stored in the crystal to be realized. The correlation spot continuously followed the moving object with the same time resolution (10 ms) as the reproduced movie.

Applied Optics•Mar 10, 1997•5 citations

Optical Data Storage Using Persistent Spectral Hole Burning

Eric S. Maniloff, Stefan B. Altner, Stefan Bernet +2 more

The use of holography is attractive for optical data storage due to its potential for implementing page oriented data storage systems. However, multiplexed recording using Bragg selective materials has not provided a large enough storage capability to justify the expense of these systems. Persistent spectral hole burning holography allows multiplexed recording using much smaller wavelength separations between the holograms, and hence dramatically increases the storage capacity possible in holographic memory systems [1]. A comparison between the wavelength selectivity obtained for transmission gratings recorded using hole burning in a dye doped polymer film versus Bragg selectivity in a 1 cm thick iron-doped lithium niobate crystal is shown in Fig. (1).

Joint International Symposium on Optical Memory and Optical Data Storage•Jan 1, 1993•0 citations

Holographic motion pictures by hole burning

Koichi Karaki, Hiroko Sasaki, Masaharu Mitsunaga

A real-time read/write motion picture has been demonstrated by hole-burning holography using cryogenic Eu3+:Y2SiO5 crystal. In a holographic configuration, the laser frequency was continuously scanned within the 7F0-5D0 absorption line while the object was in motion. Since this movie does not have any picture frames, it is temporary continuous. This feature might realize high-speed and high-time- resolution motion recording.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Jul 27, 1995•1 citation

Holeburning holography is an ultrahigh density image storage technique. Since the memory capacity is governed by the ratio of the inhomogeneous-to-homogeneous linewidths, 103~106 images can be recorded in a single sample spot. An extensive study on holebuming holography has been carried out by Wild et.al for organic dye-doped polymer samples1-4. On the other hand, holeburning holography has not been carried out for crystal samples, because there are few crystals exhibiting persistent holes. We have performed holeburning holography to record images for Eu3+:Y2SiO5 crystal which has been known for exhibiting persistent holes. Moreover, Eu3+:Y2SiO5 has other unique features5,6 such as narrow holewidth and high holeburning quantum efficiency. By using this crystal, we have also succeeded in real-time recording of a moving object.

Plane wave holography is a method of producing and detecting weak spectral holes with very low background [1]. Its success relies upon hole-burning materials of excellent optical quality with strongly absorbing zero phonon lines such as dye doped polymers which have been extensively studied [2 and references therein]. Through an extension of this technique, image storage [3] and data manipulation [4] have been demonstrated in such materials. Here, we report the application of plane wave holography to a crystalline material, Y2SiO5:Pr3+, for the first time. Spectroscopic measurements of Y2SiO5:Pr3+ have not previously been reported.

Real-time recording of a moving object was made with persistent spectral hole burning of a cryogenic Eu(3+):Y(2)SiO(5) crystal. In a basic holographic configuration the ultrastable laser frequency was continuously scanned within the (7)F(0)-(5)D(0) absorption line (typically 200 MHz in 20 s) while the object was in motion, thus permitting the storage and reconstruction of the moving image. The success of this motion picture is attributable to (1) the kilohertz-wide hole width, (2) the quasi-persistent hole lifetime, and (3) the high hole-burning quantum efficiency of this material.

We propose and demonstrate a novel technique for direct pattern recognition of motion pictures based on frequency- and spatial-domain holography using a cryogenic Eu(3+):Y(2)SiO(5) crystal. The fast hole-burning speed of the crystal allows a moving image to be continuously recorded in it by a frequency-scanned laser. Using Fourier transform holography permitted direct pattern recognition of a 25-s movie stored in the crystal to be realized. The correlation spot continuously followed the moving object with the same time resolution (10 ms) as the reproduced movie.

The use of holography is attractive for optical data storage due to its potential for implementing page oriented data storage systems. However, multiplexed recording using Bragg selective materials has not provided a large enough storage capability to justify the expense of these systems. Persistent spectral hole burning holography allows multiplexed recording using much smaller wavelength separations between the holograms, and hence dramatically increases the storage capacity possible in holographic memory systems [1]. A comparison between the wavelength selectivity obtained for transmission gratings recorded using hole burning in a dye doped polymer film versus Bragg selectivity in a 1 cm thick iron-doped lithium niobate crystal is shown in Fig. (1).