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Two-photon apodization in lithium niobate.

D Lande, S S Orlov, L Hesselink

|December 20, 2007

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We developed a new apodization method for holographic data storage. This technique significantly reduces cross talk in lithium niobate crystals, improving data retrieval accuracy.

Area of Science:

Materials Science
Optical Engineering
Data Storage Technologies

Background:

Holographic data storage offers high density but suffers from cross talk.
Apodization techniques are crucial for mitigating cross talk in holographic systems.
Stoichiometric lithium niobate is a promising material for holographic applications.

Purpose of the Study:

To introduce and validate a novel apodization technique for holographic data storage.
To reduce multiplexing cross talk in holographic storage systems.
To enhance the fidelity and reliability of data retrieval.

Main Methods:

Utilizing a two-photon recording process in stoichiometric lithium niobate.
Implementing a gating light-intensity profile for in-situ grating apodization.

Related Experiment Videos

Conducting experiments in the transmission geometry for holographic recording.

Main Results:

Achieved significant grating apodization within the crystal's bulk.
Experimental Bragg-selectivity curves demonstrated the effectiveness of the technique.
Observed a >20-dB reduction in multiplexing cross talk.

Conclusions:

The novel apodization technique effectively suppresses cross talk in holographic data storage.
This method enhances the performance of holographic storage systems using stoichiometric lithium niobate.
The findings pave the way for more robust and higher-capacity holographic data storage solutions.