The Measurement of Spatial and Temporal Distribution of Radiation, Using a Talbot Spectrometer

Abstract

A Simulation Game to train data processors in optimal data recovery techniques is included in this report. Also, the authors studied the triple- multiplexing response to a point source for a future scanning spectrometer. Three basic motions are required to modulate the wavelength and angular coordinates of the source. When performing preliminary experiments with the Multiplex Scanner, the authors discovered that the underlying Talbot effect is useful also for measuring phase objects. The theory of this new Talbot Interferometer is explored and experimental results of a candle flame are reported. For axially symmetric objects, this setup is modified by replacing the straight line gratings with circular gratings. In this way the radial gradient of the deformed wavefront is observed. Finally a means of simply, yet accurately collimating a light source using the Talbot Interferometer is described.

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Document Details

Document Type
Technical Report
Publication Date
Jun 30, 1971
Accession Number
AD0730330

Entities

People

  • Adolf W. Lohmann
  • Donald E. Silva

Organizations

  • University of California, San Diego

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Computer Programs
  • Detection
  • Differential Equations
  • Diffraction
  • Equations
  • Frequency
  • Information Science
  • Interferometers
  • Light Sources
  • Measurement
  • Optics
  • Physics
  • Plane Waves
  • Power Spectra
  • Signal Processing
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Image Processing and Computer Vision.
  • Optical Physics and Photonics.