Fabrication and testing of a GaP SIL with NA = 2.64

Jun Zhang, Matt Lang, Tom D. Milster, Tao Chen, Eric Aspnes, Bernard Bell

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations


A solid immersion lens (SIL) is described with NA = 2.64 that is fabricated from a two-step process using a large BK7 glass hemisphere and a small GaP hemisphere. The Gallium Phosphide (GaP) hemisphere has a radius 114μm, and is cemented in the center of BK7 SIL with index-matching epoxy. The BK7 SIL thickness is accommodated to have both BK7 SIL and GaP SIL in an image centric configuration. The two-step GaP SIL is tested on an induced polarization imaging system. Induced polarization pupil images, the native polarization image and induced polarization image of a DVD RW sample are given in this paper.

Original languageEnglish (US)
Title of host publicationOptical Data Storage 2007
StatePublished - 2007
EventOptical Data Storage 2007 - Portland, OR, United States
Duration: May 20 2007May 23 2007

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherOptical Data Storage 2007
Country/TerritoryUnited States
CityPortland, OR

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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