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30 July 1997 Investigation of certain diffraction effects in a double-layer optical disk
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Proceedings Volume 3109, Optical Data Storage 1997 Topical Meeting; (1997)
Event: Optical Data Storage Topical Meeting '97, 1997, Tucson, AZ, United States
We report certain diffraction effects that are pertinent to the operation of double-layer optical recording media. The diffraction of light from the out-of-focus layer and the resulting distribution on the in-focus layer are studied using computer simulations. The findings are then verified by direct measurements. We also describe a technique for analyzing (by computer simulation) the focus-error signa, FES, in systems that use the astigmatic method in conjunction with the double-layer disk. The results of our computer simulations of the FES are compared with those measured in an actual disk drive; good agreement between computation and measurement is obtained.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jang-hoon Yoo, Chul Woo Lee, Dong-Ho Shin, Chanda L. Bartlett, Kit-Iu Cheong, James Kevin Erwin, and Masud Mansuripur "Investigation of certain diffraction effects in a double-layer optical disk", Proc. SPIE 3109, Optical Data Storage 1997 Topical Meeting, (30 July 1997);

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