Journal ArticleDOI
Polarization properties of photorefractive diffraction in electrooptic and optically active sillenite crystals (Bragg regime)
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TLDR
In this article, a set of coupled-wave equations that characterize the Bragg regime has been derived for the 〈110〉 and the ¾¾ ¾ crystallographic orientations typically employed in volume holographic storage and multi-wave-mixing applications.Abstract:
The polarization properties of diffraction from volume phase gratings in photorefractive sillenite crystals such as bismuth silicon oxide (Bi12SiO20), bismuth germanium oxide (Bi12GeO20), and bismuth titanium oxide (Bi12TiO20) are strongly modified by the presence of concomitant natural optical activity and electric-field-induced linear birefringence. A set of coupled-wave equations that characterize the Bragg regime has been derived for the 〈110〉 and the 〈001〉 crystallographic orientations typically employed in volume holographic storage and multiwave-mixing applications. The predicted anisotropic behavior of the grating diffraction is experimentally confirmed, and a significant efficiency improvement is shown to occur for proper choice of the operating mode and the probe beam polarization in a given configuration.read more
Citations
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Studies of multiphoton production of vacuum-ultraviolet radiation in the rare gases
Armon McPherson,George N. Gibson,H. Jara,U. Johann,Ting S. Luk,I. A. McIntyre,Keith Boyer,Charles K. Rhodes +7 more
TL;DR: In this article, electron correlations in a direct nonlinear process of inner-shell excitation were found to be important in multielectron processes, leading to evidence for a role of electron correlation in the nonlinear processes of inner shell excitation.
Journal ArticleDOI
Multilayer Optical Learning Networks
Kelvin H. Wagner,Demetri Psaltis +1 more
TL;DR: A new approach to learning in a multilayer optical neural network based on holographically interconnected nonlinear devices that performs an approximate implementation of the backpropagation learning procedure in a massively parallel high-speed nonlinear optical network.
Journal ArticleDOI
Adjustable phase control in stabilized interferometry.
A. A. Freschi,Jaime Frejlich +1 more
TL;DR: An optoelectronic feedback loop that permits the active stabilization of an interferometric setup for any chosen value of the phase between the interfering beams is reported.
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Phase-shifting real-time holographic interferometry that uses bismuth silicon oxide crystals
Marc Georges,Philippe Lemaire +1 more
TL;DR: It is shown that quantitative measurements are possible for low-intensity object beams (8 µW/cm(2)) and a large observed area and the temporal interferogram erasure is studied and is found weakly perturbative for the measured phase.
Journal ArticleDOI
Thermal fixing of holographic gratings in Bi12SiO20
TL;DR: In this paper, a thermal erasure of the fixed gratings provided a value of 1.44 eV for the activation energy and 0.03 cm2/s−1 for the preexponential factor for diffusion of these charges.
References
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Journal ArticleDOI
Coupled wave theory for thick hologram gratings
TL;DR: In this paper, a coupled wave analysis of the Bragg diffraction of light by thick hologram gratings is given, analogous to Phariseau's treatment of acoustic gratings and to the dynamical theory of X-ray diffraction.
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Holographic storage in electrooptic crystals. i. steady state
TL;DR: In this paper, a non-linear theory of self-diffraction on the light induced grating of refractive index in electrooptic crystals is developed and the intensities of the diffracted beams, the diffraction efficiency, and the shape of the surfaces of equal index change are calculated analytically for saturation holograms.
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Optical interconnections for VLSI systems
TL;DR: The combination of decreasing feature sizes and increasing chip sizes is leading to a communication crisis in the area of VLSI circuits and systems, and the possibility of applying optical and electrooptical technologies to such interconnection problems is investigated.
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Analysis and applications of optical diffraction by gratings
Thomas K. Gaylord,M. G. Moharam +1 more
TL;DR: In this article, an exact formulation of the grating diffraction problem without approximations is presented, using a series of fundamental assumptions, which reduces to the various existing approximate theories in the appropriate limits.
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Two‐beam coupling in photorefractive Bi12SiO20 crystals with moving grating: Theory and experiments
TL;DR: In this paper, the second-order term in the Fourier development of Esc was interpreted by including the second order term in a second order Fourier term in Fourier analysis of BSO crystals.