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Write-once optical disc media with large change of reflectance using copper island films

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3 Author(s)
Baba, K. ; Tokoku Univ., Sendai, Japan ; Hayashi, K. ; Miyagi, M.

A new write-one optical disc medium using a metal island film is proposed and investigated experimentally. The reflectance and absorbance of an 8 nm thick copper island film were 49 and 37%, respectively, at a wavelength of 780 nm and the reflectance was decreased to 15% by heating the film at a temperature above 130 degrees C, which shows that it can be used as an efficient heat-mode write-once memory for commercially available laser diodes.

Published in:

Electronics Letters  (Volume:28 ,  Issue: 23 )

Date of Publication:

5 Nov. 1992

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