Method for improved holographic recording using beam...

Optical: systems and elements – Holographic system or element – Using modulated or plural reference beams

Reexamination Certificate

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C359S010000, C359S035000

Reexamination Certificate

active

10059242

ABSTRACT:
An apodization system for achieving a substantially uniform intensity profile of a modulated reference beam on a holographic recording medium. The substantially uniform intensity profile serves to improve the quality of any and all recorded holograms. In high-density holographic storage, the apodization system reduces the required hologram extent while still, maintaining any fidelity constraints (power budget, imaging tolerances, error-rate, noise floor). Furthermore, in high-fidelity holographic storage, better control of the hologram recording parameters can be established. The improved control allows tighter specifications on the image quality to be achieved.

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