An Investigation of Variable Coherence Sources & of Some Practical Applications.

Abstract

We have investigated, designed and tested a modified form of Mach-Zehnder interferometer for measuring the coherence length of a partially coherent source. The instrument is unique that it allows the recording of a fringe pattern and the extraction of the corresponding visibility curve even for sources with poor spatial coherence by virtue of the instrument's differential magnification. To our knowledge, the idea of magnifying a coherence pattern is new and could have important laboratory applications. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Nov 09, 1981
Accession Number
ADA107715

Entities

People

  • James D. Farina
  • Lorenzo M. Narducci

Organizations

  • Drexel University

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Atmospheric Sciences
  • Calibration
  • Far Field
  • Images
  • Integrals
  • Intensity
  • Interferometers
  • Laser Beams
  • Lasers
  • Mach Zehnder Interferometers
  • Magnification
  • Measurement
  • Michelson Interferometers
  • Near Field
  • Physics
  • Visibility

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Optical Physics and Photonics.