Jpn. J. Appl. Phys. 50 (2011) 09MF05 (2 pages)  |Previous Article| |Next Article|  |Table of Contents|
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Brief Note

Reducing Interlayer Crosstalk in Reading Multilayer Disc for Compact Optical Pickup Using Polarizing Filter

Shigeharu Kimura, Eriko Tatsu, and Tatsuro Ide

(Received January 26, 2011; accepted April 11, 2011; published online September 20, 2011)

We proposed an interlayer crosstalk reduction device that can be used in an optical pickup based on the astigmatic aberration method. The device has two wave plates covering the half plane at different positions on the optical axis and an analyzer, and is placed in the beam of astigmatic aberration. We can make the polarization state of the beam after transmission of the two wave plates different according to whether the focal line position is situated between the two wave plates. We measured the device transmission and confirmed that the optical characteristics agree well with the simulation.

URL: http://jjap.jsap.jp/link?JJAP/50/09MF05/
DOI: 10.1143/JJAP.50.09MF05
KEYWORDS:42.79.Vb, 42.70.Ln
PACS: 42.79.Vb, 42.70.Ln

References

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2. S. Kimura, T. Ide, Y. Anzai, K. Watanabe, T. Shintani, and E. Tatsu: Jpn. J. Appl. Phys. 48 (2009) 03A057[JSAP].
3. T. K. Kim, Y. M. Ahn, S. J. Kim, T. Y. Heor, C. S. Chung, and I. S. Park: Tech. Dig. ISOM'04, Th-I-06.