Cross-erasure noise in high-density holographic-storage systems

F Vachss, I McMichael, J Hong - JOSA B, 1997 - opg.optica.org
We consider a process by which images recorded in high-density holographic storage
systems may be degraded. In particular, the recording of many holograms in the same …

Spatial fidelity of photorefractive image correlators

AD Meigs, BEA Saleh - IEEE journal of quantum electronics, 1994 - ieeexplore.ieee.org
The set of equations describing photorefractive four-wave mixing of image-bearing beams
has been solved in the presence of diffraction using a perturbation analysis assuming a …

Effect of channel coding in digital holographic data storage

JLC Phua, TC Chong, YWY Wu… - Japanese journal of …, 1999 - iopscience.iop.org
A random array exclusive OR modulation (REOM) channel coding technique is proposed for
digital holographic data storage. The effect of channel coding on the system performance is …

Cross-talk noise in photorefractive interconnection

C Gu, A Chiou, J Hong - Applied optics, 1993 - opg.optica.org
The cross-talk noise in reconfigurable interconnection, which results from the nonuniform
amplification in photorefractive two-wave mixing in the Fourier domain, in which maximum …

Photorefractive square-law converter

F Vachss, J Hong, S Campbell - Optics letters, 1991 - opg.optica.org
We demonstrate a new type of optically addressed spatial light modulator. By imaging an
external grating into a photorefractive material, we write holographic gratings without the …

Gaussian-beam profiles deformation via anisotropic photorefractive grating formed by diffusive, photovoltaic, and drift mechanisms: a system transfer function …

CW Tarn - Optical Engineering, 1998 - spiedigitallibrary.org
Light-beam profile deformation during scattering with the photorefractive grating formed by
the diffusive, photovoltaic, and drift mechanisms is investigated in the case of anisotropic …

[PDF][PDF] L'effet photoréfractif

G Pauliat, G Roosen - Collection SFO, 1998 - library.oapen.org
La souplesse d'emploi des matériaux photoréfractifs est un de leurs principaux attraits. Un
même échantillon est sensible sur une plage de longueurs d'onde de plus de 100 nm avec …

Theory of amplitude and phase effects in 2-D-two-wave mixing

G Notni, R Kowarschik - IEEE journal of quantum electronics, 1991 - ieeexplore.ieee.org
The two-wave mixing process in a photorefractive medium is investigated including
nonuniform amplitude distributions of the pump and signal waves, plane-aberrated phase …

Spatial fidelity in photorefractive image amplification

S Zhou, QB He, P Yeh, HK Liu - Optics communications, 1993 - Elsevier
The spatial fidelity of amplified images in photorefractive materials due to spatial gain
variations with computation and experiment based on BaTiO 3 is investigated. The results …

Temporal integration using the photorefractive square-law converter

F Vachss, JH Hong, P Yeh - Optical and Digital Gallium …, 1990 - spiedigitallibrary.org
A modified real-time holographic technique for obtaining high fidelity integration of coherent
or incoherent signals is described. The technique maintains the sensitivity, resolution, and …