Characteristics of gap-induced aberration in solid immersion lens systems

Author

Jo, J.S. ; Milster, T.D. ; Erwin, J.K.

Author_Institution

Opt. Data Storage Center/Opt. Sci. Center, USA

fYear

2000

fDate

14-17 May 2000

Firstpage

39

Lastpage

41

Abstract

The induced phase changes are quantified by varying air gap width. Experiment shows the shape of the gap-induced aberration is well predicted by our simulation. The aberration is characterized by three parameters. The analyzed solid immersion lens (SIL) system is composed of SIL, gap, and substrate. The air gap induces instrumental polarization aberration due to vector thin-film effects. For larger air gaps the changes of phase increase. The astigmatic spot is explained by the increased aberration. Experiment confirms simulation at 300 nm air gap for LaSFN9 (SIL/substrate).

Keywords

aberrations; lenses; light polarisation; optical images; optical storage; solid-state phase transformations; LaSFN9; astigmatic spot; gap-induced aberration; increased aberration; induced phase changes; instrumental polarization aberration; optical recording medium; phase change; simulation; solid immersion lens systems; substrate; varying air gap width; vector thin-film effects; Apertures; Instruments; Laser beams; Lenses; Memory; Optical films; Optical polarization; Optical recording; Solids; Transistors;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Data Storage, 2000. Conference Digest

Conference_Location

Whisler, BC, Canada

Print_ISBN

0-7803-5950-X

Type

conf

DOI

10.1109/ODS.2000.847974

Filename

847974