標題: | Laser diode active height control system for data storage applications |
作者: | Fang, Jen-Yu Herget, Philipp Bain, James A. Schlesinger, T. E. 光電工程學系 光電工程研究所 Department of Photonics Institute of EO Enginerring |
關鍵字: | nano-scale control;self-mixing effect;near-field recording;optical recording |
公開日期: | 1-一月-2006 |
摘要: | We describe and characterize an active height control system for near-field data storage applications using a commercial laser diode as a direct position sensor. The self-mixing interference signal was experimentally characterized and the effective spot size of the laser sensor was also measured. A control system utilizing interference in the laser as feedback signal was constructed to drive a conventional DVD pickup with the laser sensor mounted. The residual position error is +/- 9nm when the rotation speed of a glass disk was 1500rpm and the vertical runout was 16 mu m. The approach limit was estimated to be 25nm when the laser size is reduced to 100 mu m. |
URI: | http://dx.doi.org/10.1117/12.685215 http://hdl.handle.net/11536/146245 |
ISBN: | 0-8194-6357-4 |
ISSN: | 0277-786X |
DOI: | 10.1117/12.685215 |
期刊: | OPTICAL DATA STORAGE 2006 |
Volume: | 6282 |
起始頁: | 0 |
結束頁: | 0 |
顯示於類別: | 會議論文 |