Abstract
A presentation is given of a novel focusing tracking technique with increased feedthrough immunity applied to optical disks. The double-astigmatic method is discussed. A description is given of the system model and of the single-astigmatic method. The double-astigmatic method and plots of intensity of the detector plane for the beam centered on the land when 45 degrees astigmatism is presented are given.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 5789-5796 |
| Number of pages | 8 |
| Journal | Journal of the Optical Society of America B: Optical Physics |
| Volume | 10 |
| Issue number | 1 |
| State | Published - Jan 1993 |
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Atomic and Molecular Physics, and Optics