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

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)5927-5932
Number of pages6
JournalJapanese Journal of Applied Physics
Volume47
Issue number7 PART 2
DOIs
Publication statusPublished - 2008 Jul 18

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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