Selective page-addressable fixing of volume holograms in Sr_075Ba_025Nb_2O_6 crystals

Kewitsch, Anthony; Segev, Mordechai; Yariv, Amnon; Neurgaonkar, Ratnakar R.

doi:10.1364/ol.18.001262

Cited by 38 publications

(7 citation statements)

References 15 publications

(2 reference statements)

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“…Data storage systems have been demonstrated [3] using SBN, and even selective-adressable electrical fixing of volume holograms in SBN has been shown [4]. However, an optimization and deeper understanding of the basic process for these properties is still missing.…”

mentioning

confidence: 99%

Dielectric Measurements on SBN:Ce

Wittler

Greten

Kapphan

et al. 1995

Physica Status Solidi (b)

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mentioning

confidence: 99%

Dielectric Measurements on SBN:Ce

Wittler

Greten

Kapphan

et al. 1995

Physica Status Solidi (b)

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“…al. [2] reported similar results displaying an exposure threshold for fixing of 100 J cm-*, with effectively infinite lifetimes. This exposure threshold is primarily attributed to local heating in the region of intense illumination.…”

Section: High Intensity Domain Fixingmentioning

confidence: 52%

“…The experimental study of reference [2] indicates that the fixed diffraction efficiency during recording with high intensity beams (> 1 W cm-2) increases for more than 8 hours upon continuous writing. Figure 4a depicts the first 2 hours of recording.…”

Section: High Intensity Domain Fixingmentioning

confidence: 99%

“…Holograms individually fixed in SBN (with a diffraction efficiency of 3%) do not require any post-writing processing, such as a heating cycle or an electrical fixing pulse [2,4]. An increase in incident intensity, temperature (while below T,) or write time all tend to enhance the diffraction efficiency of the fixed hologram.…”

Section: Applications To Holographic Data Storagementioning

confidence: 99%

“…An increase in incident intensity, temperature (while below T,) or write time all tend to enhance the diffraction efficiency of the fixed hologram. A potential advantage of this technique is the ability to individually fix holograms (by increasing the exposure above a threshold of 100 1 cm-2) that may be individually overwritten [ 2 ] . This rewrite property is important in applications such as holographic random access memories or reconfigurable optical interconnects and has not been demonstrated using conventional thermal fixing techniques in LiNbO3.…”

Section: Applications To Holographic Data Storagementioning

confidence: 99%

See 2 more Smart Citations

Optically induced ferroelectric domain gratings in SBN: theory and applications to quasi-phase matching and optical data storage

Kewitsch

Segev

Saito

et al.

Proceedings of 1994 IEEE International Symposium on Applications of Ferroelectrics

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Illuminating a photoconducting strontium barium niobate crystal with a low intensity optical standing wave generates dynamic as well as remnant polarization gratings. We study the kinetics of these gratings and present a thermodynamic model for the grating formation. Fundamentally, light induced space charge fields dynamically modify the positions of ions within the unit cell and tailor the electronic, optical, and acoustic properties of the material.

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Holography

Honh¹

2000

Kirk-Othmer Encyclopedia of Chemical Technology

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Holograms are capable of storing and displaying the optical waves scattered by an object wholly in a way that is completely unique from photographs which are, at best, accurate but flat projections. A hologram is essentially an interferometric, record of a wavefront so that the whole character of the wave, its amplitude, and phase, is captured. This article describes the fundamentals of optical holography, beginning with a discussion of the holographic principle and concluding with descriptions of important applications in the areas of displays, interferometry, data storage, and information processing. The large variety of hologram formats, materials, and techniques available to the holographer is explored in some detail with mathematical expressions that model the optical behavior of specific types of holograms given whenever appropriate.

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Selective page-addressable fixing of volume holograms in Sr_075Ba_025Nb_2O_6 crystals

Cited by 38 publications

References 15 publications

Dielectric Measurements on SBN:Ce

Dielectric Measurements on SBN:Ce

Optically induced ferroelectric domain gratings in SBN: theory and applications to quasi-phase matching and optical data storage

Holography

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