Laser Diode Active Height Control for Near Field Optical Storage
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概要
- 論文の詳細を見る
The use of commercial laser diodes as near field, nano-scale position sensors for feedback control systems was experimentally investigated. A static experimental setup was constructed to measure and characterize the laser diode feedback mechanism. Experiments show that the lasers, which act as miniature interferometers, provide a high accuracy, high signal-to-noise ratio (SNR) signal both in the near and far field. The laser diodes were then mounted in commercial digital versatile disc (DVD) actuators and a control system was constructed. The control system can operate both in the near and far field, and a controlled approach from the far to near field is demonstrated using a fringe jump controller. Finally, using the experimentally gathered feedback data, the residual control error of $\pm 1$ nm was estimated for this system.
- 2006-02-15
著者
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Bain James
Data Storage Systems Center Carnegie Mellon University
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Schlesinger T.
Data Storage Systems Center Carnegie Mellon University
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Herget Philipp
Data Storage Systems Center Carnegie Mellon University
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Messner William
Data Storage Systems Center, Carnegie Mellon University, Pittsburgh, PA 15217, U.S.A.
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Bain James
Data Storage Systems Center, Carnegie Mellon University, Pittsburgh, PA 15217, U.S.A.
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Taneya Mototaka
Compound Semiconductor Division, Sharp Corporation, Hiroshima, Japan
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Takatani Kunihiro
Compound Semiconductor Division, Sharp Corporation, Hiroshima, Japan
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Ohno Tomoki
Sharp Laboratories of America, Camas, WA 98607, U.S.A.
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Schlesinger T.
Data Storage Systems Center, Carnegie Mellon University, Pittsburgh, PA 15217, U.S.A.
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