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THE OPTICAL CHARACTERISTICS IN THE LAYERS OF COMPACT DISC-RECORDABLE
Korean Journal of Chemical Engineering, March 1997, 14(2), 88-92(5), 10.1007/BF02706066
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Abstract
The optical characteristics of the laser beam in the layers of Compact Disc Recordable （CD-R） has been studied. The optical disk which is compatible with currently used CD-drive consists of transparent polycarbonate (PC) substrate, organic dye recording layer, reflective gold layer, and ultra-violet (UV) cured protecting layer. For proper design of the layer structure, modeling of the optical characteristics in each layer is necessary. The reflection and local absorption of the laser beam energy in the layers of the disk were numerically calculated. The reflection of the disk oscillates with the thickness of dye layer due to the interference in the multilayers. The oscillation magnitude and period depend on the complex refractive index of the material. The energy absorption profile in the recording layer is dependent on the thickness of the layer.
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References
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Kim JS, Cho OK, Min KS, Park KY, Synth. Met., 71, 2215 (1995)
Kim JS, Chung DJ, Min KS, Cho OK, Park KY, "Side Chain Liquid Crystalline Polymer for Optical Recording," KIChE meeting, November (1994)
Kim JS, Ma MK, Huh YJ, Kim CS, "Temperature Distribution in Optical Disk after Laser Writing," Proc. '96 ME & D, April (1996)
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Matsuoka M, "Infrared Absorbing Dyes," Plenum Press, New York (1990)
Pahwa A, "The CD-Recordable Bible," Eight Bit Books, Wilton (1994)
Palik ED, "Handbook of Optical Constants of Solids," Academic Press, San Diego (1985)
