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Diffraction efficiency of localized holograms in doubly doped LiNbo(3) crystals

Related publications (32)

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Comparison of the recording dynamics of phenanthrenequinone-doped poly(methyl methacrylate) materials

Demetri Psaltis

The comparison between the NCTU and Caltech PQ-PMMA material shows that the difference in their behavior lies in the different concentration of residual MMA in the samples. Experimental evidence shows that during recording, PQ molecules attach to MMA but n ...

2001

Localized holographic recording in doubly doped lithium niobate

Demetri Psaltis

In:holographic data storage, pages of information are overlapped in the volume of the recording medium. Due to destructive read-out of holograms in photorefractive crystals such as LiNbO3:Fe, holograms are recorded with an exposure schedule in order-to equ ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2000

Localized holographic recording in doubly doped lithium niobate

Demetri Psaltis

Persistent holograms are recorded locally with red light in a LiNbO3 crystal doped with Mg and Fe. Selective erasure is realized by use of a focused UV sensitizing light. We demonstrate the recording of 50 localized images as well as selective erasure in a ...

2000

Sensitivity improvement in two-center holographic recording

Demetri Psaltis

Persistent holograms are recorded with green light in LiNbO3 crystals doped with Mn and Fe. The recording sensitivity is 20 times better than that obtained by recording with red light. Partial loss of persistence is caused by using green light for recordin ...

2000

Holographic recording in a photopolymer by optically induced detachment of chromophores

Demetri Psaltis

We demonstrate holographic recording in a new photopolymer system. The recording material is created by copolymerization of an optically inert monomer, methyl methacrylate, and a second monomer that is optically sensitive. On exposure of the recording mate ...

2000

Secondary grating formation by readout at Bragg-null incidence

Demetri Psaltis

We show that when a dynamic hologram is read out by illumination at the Bragg nulls of a previously recorded grating the diffracted beam inside the medium can result in the recording of two secondary gratings that alter the final selectivity curve. This is ...

1999

Hologram multiplexing using two-step recording

Demetri Psaltis

We present a comparison of different two-step holographic recording schemes based on their multiplexing performance using a unified framework. The difference between the different schemes is mainly due to the energy levels and sources of the traps. The inf ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa1998

High-density recording in photopolymer-based holographic three-dimensional disks

Demetri Psaltis

The performance specifications of a holographic three-dimensional disk system are experimentally characterized. A surface density of 10 bits/mu m(2) is experimentally demonstrated with a 100-mu m-thick photopolymer as the recording medium. (C) 1996 Optical ...

1996

Holographic Storage Using Shift Multiplexing

Demetri Psaltis

We demonstrate theoretically and experimentally a new multiplexing method for volume holographic storage using a single reference beam that is composed of multiple plane waves or is a spherical wave. We multiplex the holograms by shifting the recording mat ...

1995

Holographic 3-D Disks

Demetri Psaltis

The performance characteristics of an experimental holographic 3-D disk system are described. A surface density of 10 bits/mu(2) is experimentally demonstrated using a 100 mu m thick photopolymer as the recording medium. ...

1995