Anti-reflective coating for holographic data storage media

Details Anti-reflective coating for holographic data storage media Anti-reflective coating for holographic data storage media

2005-01-04

2005-01-04

Chang, Audrey (Department: 2872)

Optical: systems and elements

Light interference

Produced by coating or lamina

C359S580000, C359S588000, C359S490020, C359S490020, C359S015000

Reexamination Certificate

active

06839177

ABSTRACT:
A holographic data storage medium having an anti-reflective coating is described. The anti-reflective coating can be made to reduce reflectivity for S-polarized light over a wide range of incident angles. Moreover, the anti-reflective coating can be made to have a sufficiently high transmittance for the S-polarized light. The coating may improve performance of the holographic data storage medium, and can facilitate higher storage densities than can be achieved without the coating.

REFERENCES:
patent: 5912762 (1999-06-01), Li et al.
patent: 6271968 (2001-08-01), Dobrowolski et al.
patent: 6563977 (2003-05-01), Chen et al.
patent: 6574039 (2003-06-01), Murata et al.
patent: 11212434 (1999-08-01), None
“A broadband antireflection coating for enhanced holographic recording and readout in bismuth silicon oxide,” Karim et al., Appl. Phys. Lett. 70 (21), May 26, 1997, pp. 2793-2795.

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