CD-R and CD-RW optical disk characterization in response to intense light sources

Farhad Akhavan; Tomas D. Milster

doi:10.1117/12.371149

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30 November 1999 CD-R and CD-RW optical disk characterization in response to intense light sources

Farhad Akhavan, Tomas D. Milster

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Proceedings Volume 3806, Recent Advances in Metrology, Characterization, and Standards for Optical Digital Data Disks; (1999) https://doi.org/10.1117/12.371149
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

Several commercial CD-R and CD-RW optical recording disks are exposed to intense white light sources (Halogen Tungsten and High-Intensity Discharge) at different exposure times under three minutes. Main analog playback parameters for CD-R and CD-RW optical recording disks are identified and characterized. The contents of a test disk is recorded onto each CD-R and CD-RW disk using a commercial rewritable/recordable disk drive. For each disk, written marks are imaged under a Nomarsky/Bright field optical microscope before and after exposure. Using a dynamic tester carrier-to- noise ratio and timing jitter are determined before and after exposure. AZO-dye CD-R disks, cyanine-dye CD-R disks, and CD- RW disks show considerable reduction in written mark contrast after exposure. Pthalocyanine-dye CD-R disks do not show significant changes in the mark contrast after exposure. Dynamic tester results confirm the mark contrast results and give insight into playback behavior of exposed disks.

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Farhad Akhavan and Tomas D. Milster "CD-R and CD-RW optical disk characterization in response to intense light sources", Proc. SPIE 3806, Recent Advances in Metrology, Characterization, and Standards for Optical Digital Data Disks, (30 November 1999); https://doi.org/10.1117/12.371149

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