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Optical Simulation Software
Optical Disk Media Evaluation Hardware
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| Test Run 10 - Astigmatic focus-error and push-pull track-error detection scheme |
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Featuring: Simple Gaussian beam, Positive_focusing lens, Optical disk, Astigmatic lens, Quad detector
Figure A10.1.
Figure A10.2. Distributions of intensity (a) at the entrance pupil of the astigmatic lens and (b) at the quad detector. The beam is in focus and on track.
FigureA10.3. Distribution of intensity (a) at the entrance pupil of the astigmatic lens and (b) at the quad detector. The beam is in focus and off track
Figure A10.4. Distributions of intensity (a) at the entrance pupil of the astigmatic lens and (b) at the quad detector. The beam is +10l out of focus and on track
Figure A10.5. Distributions of intensity (a) at the entrance pupil of the astigmatic lens and (b) at the quad detector. The beam is -5l out of focus and on track.
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