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Calculations on modulation transfer function of a read‐only optical disk system with super resolution

 

作者: Yihong Wu,   Yusoff bin Mohamed Noor,  

 

期刊: Applied Physics Letters  (AIP Available online 1995)
卷期: Volume 66, issue 8  

页码: 911-913

 

ISSN:0003-6951

 

年代: 1995

 

DOI:10.1063/1.113594

 

出版商: AIP

 

数据来源: AIP

 

摘要:

Simulations have been performed for signal reproduction from a read‐only super resolution optical disk using a beam splitting method, in which a collimated laser beam generated by a laser diode is split into two beams with orthogonal polarizations and then recombined using polarizing beamsplitters. The beam with a higher power is used to raise the temperature of the mask layer, while the one with a lower power is employed to reproduce the recorded data. Tilting one of the laser beams against the other results in two laser spots partially overlapped at the focal plane, and the distance between the center of the two spots can be controlled by a galvanomirror. This allows signal readout with maximum resolution independent of the disk rotation speed. ©1995 American Institute of Physics.

 

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