Gas Optics Applicable to Free Electron Laser Technology

Abstract

The mass flow characteristics and optical qualities of axisymmetric free-jet aero-windows with passively induced swirl were studied for applications to free electron lasers. The aerowindows considered are axial supersonic flows from free-jets of various sizes. Mass flow rates through the nozzles are measured and compared to measured non-swirled flow rates and theoretical values. The effect of nozzle size on swirl induction is studied. Optical qualities are measured in the far field in the laboratory and compared with optical measurements from the non-swirled cases. The optical results for swirling flow shows weak defocusing and good Strehl ratios in contrast to focusing effects and good Strehl ratios for non-swirled flow.

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Document Details

Document Type
Technical Report
Publication Date
Jul 15, 1991
Accession Number
ADA278966

Entities

People

  • Walter H. Christiansen

Organizations

  • University of Washington

Tags

DTIC Thesaurus Topics

  • Cameras
  • Classification
  • Contracts
  • Eddies (Fluid Mechanics)
  • Electrons
  • Flow
  • Flow Rate
  • Fluid Dynamics
  • Free Electron Lasers
  • Free Electrons
  • Hydrodynamics
  • Laser Beams
  • Lasers
  • Mass Flow
  • Measurement
  • Security
  • Strehl Ratio

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Optical Physics and Photonics.
  • Plasma Physics.

Technology Areas

  • Directed Energy
  • Hypersonics
  • Hypersonics - Hypersonic Flow
  • Microelectronics