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

Farhad Akhavan; Tomas D. Milster

doi:10.1117/12.371149

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.

Citation Download Citation

Farhad Akhavan, Farhad Akhavan, Tomas D. Milster, 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); doi: 10.1117/12.371149; https://doi.org/10.1117/12.371149

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