Aberration compensation in near-field optics for multilayer data storage

Kwanhyung Kim; Kitak Won; Hyeongryeol Park; Narak Choi; Kwang Sup Soh; Sam Nyol Hong; Jeongkyo Seo; Seong Eul Choi; Jaisoon Kim

doi:10.1143/JJAP.48.03A045

Aberration compensation in near-field optics for multilayer data storage

Kwanhyung Kim, Kitak Won, Hyeongryeol Park, Narak Choi, Kwang Sup Soh, Sam Nyol Hong, Jeongkyo Seo, Seong Eul Choi, Jaisoon Kim

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

Abstract

Spherical aberration (SA) is induced by a change in the focused layer in a multilayer system. In a multilayer far-field system, any kind of aberration-generating system can well compensate the SA induced by a change in the focused layer. However, the method used in the multilayer far-field system cannot be applied to a multilayer near-field recording (NFR) system with a solid immersion lens (SIL), because of many critical reasons including sensitivity. In a multilayer NFR SIL system, another method is required to compensate aberration. The use of a liquid crystal plate (LCP), afocal telescope-type lens compensator or a compact combined lens system is considered for the compensation of SA in the multilayer NFR SIL system in this study.

Original language	English (US)
Article number	03A045
Journal	Japanese Journal of Applied Physics
Volume	48
Issue number	3 PART 2
DOIs	https://doi.org/10.1143/JJAP.48.03A045
State	Published - Mar 2009
Externally published	Yes

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AU - Kim, Kwanhyung

AU - Won, Kitak

AU - Park, Hyeongryeol

AU - Choi, Narak

AU - Soh, Kwang Sup

AU - Hong, Sam Nyol

AU - Seo, Jeongkyo

AU - Choi, Seong Eul

AU - Kim, Jaisoon

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AB - Spherical aberration (SA) is induced by a change in the focused layer in a multilayer system. In a multilayer far-field system, any kind of aberration-generating system can well compensate the SA induced by a change in the focused layer. However, the method used in the multilayer far-field system cannot be applied to a multilayer near-field recording (NFR) system with a solid immersion lens (SIL), because of many critical reasons including sensitivity. In a multilayer NFR SIL system, another method is required to compensate aberration. The use of a liquid crystal plate (LCP), afocal telescope-type lens compensator or a compact combined lens system is considered for the compensation of SA in the multilayer NFR SIL system in this study.

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Aberration compensation in near-field optics for multilayer data storage

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