Experimental study on three-wavelength confocal measurement of chromatic storage

Guosheng Qi; Wei Tan; Xuesong Mai; Duanyi Xu; Peijun Jiang; Dan Ye

doi:10.1117/12.483348

17 September 2002 Experimental study on three-wavelength confocal measurement of chromatic storage

Guosheng Qi, Wei Tan, Xuesong Mai, Duanyi Xu, Peijun Jiang, Dan Ye

Proceedings Volume 4930, Advanced Optical Storage Technology; (2002) https://doi.org/10.1117/12.483348
Event: Photonics Asia, 2002, Shanghai, China

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.

Citation Download Citation

Guosheng Qi, Wei Tan, Xuesong Mai, Duanyi Xu, Peijun Jiang, and Dan Ye "Experimental study on three-wavelength confocal measurement of chromatic storage", Proc. SPIE 4930, Advanced Optical Storage Technology, (17 September 2002); https://doi.org/10.1117/12.483348

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