High-Density Near-Field Recording on Cover-Layer Protected Discs Using an Actuated 1.45 Numerical Aperture Solid Immersion Lens in a Robust and Practical System
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概要
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Near-field recording using an actuated solid immersion lens is an attractive solution for a next-generation optical storage product. By applying advanced servo techniques, like feed forward control and active disc tilt detection and compensation, robust and reliable servo operation can be ensured, even at high disc rotation speeds. Furthermore, using media with a protective cover-layer has a number of important advantages. As demonstrated in this paper, crucial advantages are superior data protection and robustness, which are essential for realizing a reliable product. Using a lens with a numerical aperture (NA) of 1.45 and discs with a 3 μm polymer cover-layer, very good recording results are obtained at tangential densities up to 36.5% more than the nominal NA-scaled density. These results strongly indicate that capacities over 100 GB per layer are feasible in this system.
- 2007-06-30
著者
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Van Den
Philips Res. Eindhoven Nld
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VERSCHUREN Coen
Philips Research
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ZIJP Ferry
Philips Research
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Bruls Dominique
Philips Research Laboratories
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Bruls Dominique
Philips Research Laboratories, High Tech Campus 4, 5656 AE Eindhoven, The Netherlands
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Yin Bin
Philips Research Laboratories, High Tech Campus 34, 5656 AE Eindhoven, The Netherlands
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Zijp Ferry
Philips Research Laboratories, High Tech Campus 4, 5656 AE Eindhoven, The Netherlands
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van den
Philips Research Laboratories, High Tech Campus 4, 5656 AE Eindhoven, The Netherlands
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Yin Bin
Philips Research Laboratories, High Tech Campus 4, 5656 AE Eindhoven, The Netherlands
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