INVESTIGATION OF TECHNIQUES FOR MODULATING AND SCANNING A LASER BEAM TO FORM A VISUAL DISPLAY.

Abstract

Various techniques which might be used to modulate and deflect a laser beam in response to an input video signal so as to form a projected visual display containing 1,000,000 resolved information bits at 30 frames per second are considered in this report. Electro-optical modulation techniques are evaluated in general and the Pockel cell using potassium dihydrogen phosphate is considered in detail. Slow scanning of the beam at 30 cycles per second is found to be feasible using a piezoelectrically driven nodding mirror scanner. Several fast scanning techniques are investigated theoretically and one type device using a prism of barium titanate electro-optically active crystalline material is also evaluated experimentally. Brief consideration of photometric and synchronization aspects of laser display systems indicates no particular problem areas to be resolved in development of actual hardware systems.

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1965
Accession Number
AD0612725

Entities

People

  • Paul R. Yoder

Tags

DTIC Thesaurus Topics

  • Absorbers (Materials)
  • Advanced Materials
  • Barium
  • Barium Titanates
  • Display Systems
  • Elements
  • Engineered Materials
  • Laser Beams
  • Lasers
  • Materials
  • Metals
  • Modulation
  • Potassium
  • Scanning
  • Titanates
  • Video Signals

Fields of Study

  • Engineering
  • Physics

Readers

  • Human-Computer Interaction (HCI).
  • Optical Physics and Photonics.
  • Radar Systems Engineering.

Technology Areas

  • Directed Energy