Amplitude and Phase Apodization Caused by Focusing Light Through an Evanescent Gap in SIL Recorders

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.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2000
Accession Number
ADP011848

Entities

People

  • J. K. Erwin
  • Joshua S. Jo
  • Tom D. Milster

Organizations

  • University of Arizona

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Air Gaps
  • Amplitude
  • Couplings
  • Data Storage Systems
  • Diffraction
  • Electric Fields
  • Films
  • Fittings
  • Information Processing
  • Intensity
  • Magnetic Fields
  • Optical Storage
  • Plane Waves
  • Refraction
  • Refractive Index
  • Technical Information Centers
  • Thin Films

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Civilian Systems Systems Program Capability Development and Upgrade Support Activity Expense and Pay Management.
  • Optical Physics and Photonics.