Laser diode active height control for near field optical storage

被引：6

作者：

Herget, P ^{[1
]}

Ohno, T

Bain, JA

Takatani, K

Taneya, M

Messner, WC

Schlesinger, TE

机构：

[1] Carnegie Mellon Univ, Data Storage Syst Ctr, Pittsburgh, PA 15217 USA

[2] Sharp Labs Amer, Camas, WA 98607 USA

[3] Sharp Co Ltd, Compound Semicond Div, Hiroshima, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 2006年 / 45卷 / 2B期

关键词：

nano-scale measurement; nano-scale control; nano-positioning; near field recording; optical recording; very small aperture laser; aperture laser;

D O I：

10.1143/JJAP.45.1193

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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 +/- 1 nm was estimated for this system.

引用

页码：1193 / 1196

页数：4

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