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Proceedings Paper

Experimental study on three-wavelength confocal measurement of chromatic storage
Author(s): Guosheng Qi; Wei Tan; Xuesong Mai; Duanyi Xu; Peijun Jiang; Dan Ye
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Paper Abstract

The principle of multi color storage using 3 lasers with different wavelength is introduced and the Method of Three-wavelength Confocal Adjustment (MTCA) is represented in detail. The three lasers are combined into a coaxial paralleled laser beam after passing through their own collimation system and one common light coupling system. Then they are focused in the same spot on the recording layer by an achromatic lens. The defocusing amounts' measurement bases on the knife-edge displacement method and displacement method of optoelectric detector. And then the 3 lasers can read and write confocally in recording media.

Paper Details

Date Published: 17 September 2002
PDF: 5 pages
Proc. SPIE 4930, Advanced Optical Storage Technology, (17 September 2002); doi: 10.1117/12.483348
Show Author Affiliations
Guosheng Qi, Tsinghua Univ. (China)
Wei Tan, Tsinghua Univ. (China)
Xuesong Mai, Tsinghua Univ. (China)
Duanyi Xu, Tsinghua Univ. (China)
Peijun Jiang, Tsinghua Univ. (China)
Dan Ye, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 4930:
Advanced Optical Storage Technology
Duanyi Xu; Seiya Ogawa, Editor(s)

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