Design and analysis of replicated solid immersion lens for large thickness tolerance in near-field recording

Yong Joong Yoon; Wan Chin Kim; Hyun Choi; No Cheol Park; Shinill Kang; Young Pil Park

doi:10.1143/JJAP.47.5927

Design and analysis of replicated solid immersion lens for large thickness tolerance in near-field recording

Yong Joong Yoon, Wan Chin Kim, Hyun Choi, No Cheol Park, Shinill Kang, Young Pil Park

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

We have designed a novel solid immersion lens (SIL) optical head to increase SIL thickness tolerance for the fabrication and assembly of a SIL optical head. We have applied an aspherical replicated lens to a general SIL optical head to improve SIL thickness tolerance more than that of a hemispherical SIL and to maintain as high a numerical aperture as a super-hemispherical SIL. By using an aspherical replicated lens, we were able to reduce the sensitivity to spherical aberration with respect to variations in the SIL thickness, which are the main cause of narrow SIL thickness tolerance. This SIL optical head design shows that the SIL thickness tolerance is larger than 30 u.m and the numerical aperture is 1.88, which is as high as that for a super-hemispherical SIL.

Original language	English
Pages (from-to)	5927-5932
Number of pages	6
Journal	Japanese journal of applied physics
Volume	47
Issue number	7 PART 2
DOIs	https://doi.org/10.1143/JJAP.47.5927
Publication status	Published - 2008 Jul 18

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

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abstract = "We have designed a novel solid immersion lens (SIL) optical head to increase SIL thickness tolerance for the fabrication and assembly of a SIL optical head. We have applied an aspherical replicated lens to a general SIL optical head to improve SIL thickness tolerance more than that of a hemispherical SIL and to maintain as high a numerical aperture as a super-hemispherical SIL. By using an aspherical replicated lens, we were able to reduce the sensitivity to spherical aberration with respect to variations in the SIL thickness, which are the main cause of narrow SIL thickness tolerance. This SIL optical head design shows that the SIL thickness tolerance is larger than 30 u.m and the numerical aperture is 1.88, which is as high as that for a super-hemispherical SIL.",

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AU - Kang, Shinill

AU - Park, Young Pil

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