Design of a phase-delay element used in phase-change disk with two beam optical head

被引：0
|
作者：
Chen, Haiqing [1 ]
Ruan, Yu [1 ]
Chang, Yangyan [1 ]
机构：
[1] Huazhong Univ of Science and, Technology, Wuhan, China
来源：
Zhongguo Jiguang/Chinese Journal of Lasers | 1994年 / 21卷 / 01期
关键词：
Design - Disks (machine components) - Phase transitions;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Two phase delay elements λ/4 wave plate QWP and λ/2 wave plate HWP are used in the system of phase-change two beam optical head. The characteristics of QWP greatly affect the performance of the system, including signal to noise ratio (SNR) of reading signal of optical disk and quality of servo signal. In this paper the defects of conventional wave plate was analyzed, and the design method of a wave plate with titling optical axis was discussed.
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页码：40 / 43
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