Crosstalk Cancellation Using Differential Wax-Wane Focus Servo Technique
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概要
- 論文の詳細を見る
We present studies of crosstalk cancellation using the differential wax-wane focus servo technique. A scalar diffraction model is employed to accurately predict its performance. The measured wavefront is implemented in the diffraction model, and excellent agreement between experimental and modeling results is achieved. With measured system aberration, the tracking crosstalk is reduced from 0.7 μm in a single channel to less than 0.1 μm in the optimized differential channel. Comparisons to the astigmatic and pupil obscuration focus error detection techniques are given. Without any aberration, the differential wax-wane technique has a tracking crosstalk amplitude of 0.04 μm compared to about 0.25 μm in other techniques.
- 社団法人応用物理学会の論文
- 1993-11-30
著者
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Milster T
Univ. Arizona Arizona Usa
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Milster Tom
Optical Data Storage Center Optical Sciences Center Univeristy Of Arizona
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Wang M
Optical Sciences Center
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Wang Mark
Optical Data Storage Center University Of Arizona
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Milster Tom
Optical Data Storage Center
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