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Design of Diffractive Optical Element for Improving Jitter Characteristics of Optical Pickup  

Lee Gun-Ki (경상대학교 전자공학과)
Jung Won-Geun (경상대학교 전자공학과)
Lee Ju-Won (경상대학교 전자공학과)
Kim Young-Il (경상대학교 전자공학과)
Jun Jae-Chul (경상대학교 전자공학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.8, no.8, 2004 , pp. 1810-1817 More about this Journal
Abstract
A diffractive optical element(DOE) for an optical pickup system is proposed in this thesis. Optimization algorithms are used to synthesise the DOE to meet a detailed specification of the two kind of cost function. The one isso called as apodization which refers to the process of suppressing the secondary maxima and the other is so called as sharpness which refers to the process of reducing the size of primary maxima. The result obtained by simplex optimization method is that the apodization and sharpness are well achieved separately. In apodization, the secondary maxima is reduced up to 39%. And in sharpness, the size of first maxima is reduced to 95.2％.
Keywords
Diffractive Optical Element; Apodization;
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