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Proceedings Paper

High numerical aperture hemisphere solid immersion lens made of KTaO3 with wide thickness tolerance
Author(s): Ariyoshi Nakaoki; Takao Kondo; Kimihiro Saito; Masahiro Sasaura; Kazuo Fujiura
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Paper Abstract

The hemisphere type SIL of KTaO3 that has a high refractive index was developed. NA 1.84 was achieved by the hemisphere SIL of KTaO3 that has a wide thickness tolerance in combination with a high NA aspherical lens of NA 0.77. Huge capacities ROM of 50-100 GB were evaluated by means of KTaO3 hemisphere SIL. The same playback performance as that of LAH79 SIL was confirmed.

Paper Details

Date Published: 22 June 2006
PDF: 8 pages
Proc. SPIE 6282, Optical Data Storage 2006, 62820O (22 June 2006); doi: 10.1117/12.685213
Show Author Affiliations
Ariyoshi Nakaoki, Sony Corp. (Japan)
Takao Kondo, Sony Corp. (Japan)
Kimihiro Saito, Sony Corp. (Japan)
Masahiro Sasaura, NTT Corp. (Japan)
Kazuo Fujiura, NTT Corp. (Japan)


Published in SPIE Proceedings Vol. 6282:
Optical Data Storage 2006

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