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