논문 해외 국제일반학술지 Design and analysis of replicated solid immersion lens for large thickness tolerance in near-field recording
- 학술지 구분 국제일반학술지
- 게재년월 2008
- 저자명 Y. Yoon, W. Kim, H. Choi, N. Park, K, Park and Y. Park
- 학술지명 co-author
- 발행처명 Research Gate
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 6
홈페이지논문 초록 (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 mum and the numerical aperture is 1.88, which is as high as that for a super-hemispherical SIL.