Application of apodization filter in blue-ray storage

Peng She; Duanyi Xu; Guosheng Qi; Rong Liu; Zhijun Lei

doi:10.1117/12.483297

17 September 2002 Application of apodization filter in blue-ray storage

Peng She, Duanyi Xu, Guosheng Qi, Rong Liu, Zhijun Lei

Proceedings Volume 4930, Advanced Optical Storage Technology; (2002) https://doi.org/10.1117/12.483297
Event: Photonics Asia, 2002, Shanghai, China

Abstract

Next generation of optical storage will use shorter wavelength lasers and higher NA lens to achieve large capacity and high density. But with increasing NA and decreasing wavelength, the depth of focus decreases rapidly. We describe a technique to get smaller width focus spot and longer depth of focus by shaping a focused Gaussian beam. The important feature of the filters is their simplicty. The apodization can be used for applications such as blue-ray optical data storage, super-REN storage and mastering.

Citation Download Citation

Peng She, Duanyi Xu, Guosheng Qi, Rong Liu, and Zhijun Lei "Application of apodization filter in blue-ray storage", Proc. SPIE 4930, Advanced Optical Storage Technology, (17 September 2002); https://doi.org/10.1117/12.483297

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