High numerical aperture hemisphere solid immersion lens made of KTaO<sub>3</sub> with wide thickness tolerance

Ariyoshi Nakaoki; Takao Kondo; Kimihiro Saito; Masahiro Sasaura; Kazuo Fujiura

doi:10.1117/12.685213

22 June 2006 High numerical aperture hemisphere solid immersion lens made of KTaO₃ with wide thickness tolerance

Ariyoshi Nakaoki, Takao Kondo, Kimihiro Saito, Masahiro Sasaura, Kazuo Fujiura

Proceedings Volume 6282, Optical Data Storage 2006; 62820O (2006) https://doi.org/10.1117/12.685213
Event: Optical Data Storage 2006, 2006, Montréal, Canada

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.

Citation Download Citation

Ariyoshi Nakaoki, Takao Kondo, Kimihiro Saito, Masahiro Sasaura, and Kazuo Fujiura "High numerical aperture hemisphere solid immersion lens made of KTaO₃ with wide thickness tolerance", Proc. SPIE 6282, Optical Data Storage 2006, 62820O (22 June 2006); https://doi.org/10.1117/12.685213

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