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Proceedings Paper

Spectroscopic and thermal properties of metallized azo dyes for digital versatile disc-recordable
Author(s): Bin Wei; Yaorong Feng; Yiqun Wu; Fuxi Gan
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Paper Abstract

Three kinds of novel metallized azo dyes based on 4-methylthiazole, 5-methyl-3-isoxazole and 5-methyl-1,3,4-thiadiazole were synthesized in order to obtain a suitable optical recording medium for digital versatile disc-recordable(DVD-R). The absorption spectra, optical constants and thermal decomposition as well as red-light (650nm) static recording properties of three nickel-azo dye films were investigated. Particularly, the nickel-azo dye film based on 5-methyl-1,3,4-thiadiazole, peaking at 554nm and 602nm, with higher refractive index (n=2.41) and lower extinction coefficient (k=0.042) at the wavelength 650nm and a sharp threshold of thermal decomposition at 335°C was obtained. The results of the red-light(650nm) static optical recording test of this dye film indicated that higher reflectivity contrast of 35% can be obtained at a laser writing power of 7.5mW and pulse width of 200ns. These results imply the nickel-azo dye based on 5-methyl-1,3,4-thiadiazole is a promising candidate as a recording medium of DVD-R.

Paper Details

Date Published: 15 September 2005
PDF: 4 pages
Proc. SPIE 5966, Seventh International Symposium on Optical Storage (ISOS 2005), 59661O (15 September 2005); doi: 10.1117/12.649795
Show Author Affiliations
Bin Wei, China National Petroleum Corp. (China)
Xi'an Jiaotong Univ. (China)
Yaorong Feng, China National Petroleum Corp. (China)
Yiqun Wu, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (China)
Fuxi Gan, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (China)

Published in SPIE Proceedings Vol. 5966:
Seventh International Symposium on Optical Storage (ISOS 2005)
Fuxi Gan; Lisong Hou, Editor(s)

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