Polarization Analyses of Readout Signals in Phase Change Material Incorporating a Solid Immersion Lens (SIL)

Abstract

Comprehensive analyses based on rigorous vector diffraction theory have been presented to simulate the readout signal contrast using SIL in reading phase change recording disk. De-polarized reflected light (y-polarized from x-polarized incident beam) results in the reduction of total signal contrast and becomes more obvious for high numerical aperture (NA) systems. Due to the signal degradation from de-polarized reflected light, filtering de-polarized light is applied to signal detection. The x-polarized contrast is a factor 1.0 to 1.35 higher than the conventional detection contrast (x+y polarized) at different gap widths, at a cost of 0 to 25 percent total intensity reduction.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2000
Accession Number
ADP011850

Entities

People

  • Cungo H. Tien
  • Han P. Shieh
  • Yin C. Lai

Organizations

  • National Chiao Tung University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Gaps
  • Couplings
  • Data Storage Systems
  • Diffraction
  • Electric Fields
  • Evanescent Waves
  • Filtration
  • Information Processing
  • Materials
  • Near Field
  • Numerical Aperture
  • Optical Storage
  • Optics
  • Phase Change Materials
  • Plane Waves
  • Reflection
  • Simulations

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Image Processing and Computer Vision.
  • Mathematics or Statistics