Amplitude and phase apodization caused by focusing light through an evanescent gap in SIL recorders

Joshua S. Jo, Tom D. Milster, J. Kevin Erwin

Research output: Contribution to journalConference article

Abstract

High numerical aperture(NA) vector diffraction theory is used to analyze a near field optical system using a solid immersion lens (SIL). The amplitude and phase of the transmitted light through the system changes as a function of the air gap height as well as indices of refraction, incident angle, etc. We call these `amplitude apodization' and `phase apodization'. The characteristics of those are done using supergaussian form. The effects of amplitude and phase apodization on irradiance are investigated for various index of refraction and air gap height.

Original languageEnglish (US)
Pages (from-to)135-142
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4081
StatePublished - Jan 1 2000
EventOptical Storage and Optical Information Processing - Taipei, Taiwan
Duration: Jul 26 2000Jul 27 2000

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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