Liquid Crystal Aberration Compensation Devices

Abstract

The application of aberration compensation devices can support the trend to higher information densities in optical data storage. The information content of a disc may be increased while maintaining acceptable tolerance levels. For example, disc tilt dependence may require coma compensation, whereas double layer formats require spherical aberration compensation. Liquid crystals (LCs) can be successfully applied in such devices. The design of two practical implementations is discussed; a coma compensating LC-cell with special electrode-design for optimized tolerances w.r.t. decentering, and a lens made of photopolymerizable LC, which can be used to compensate for spherical aberration.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2000
Accession Number
ADP011839

Entities

People

  • Emile Verstegen
  • Henk Stapert
  • Jeroen Wals
  • Joris Vrehen
  • Sjoerd Stallinga

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Astigmatism
  • Cells
  • Compensation
  • Crystals
  • Electrodes
  • Geometry
  • Information Processing
  • Liquid Crystals
  • Modulation
  • Optical Storage
  • Phase Modulation
  • Polarization
  • Polymers
  • Refractive Index
  • Thickness
  • Unmanned Maritime Systems
  • Wavefronts

Fields of Study

  • Physics

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Military Mobilization and Reserve Forces Studies.
  • Optical Physics and Photonics.