Physical Optics

Optics and Spectroscopy

, Volume 107, Issue 2, pp 282-287

First online:

Longitudinal coherence length of an optical field

  • V. P. RyabukhoAffiliated withSaratov State UniversityInstitute of Precision Mechanics and Control, Russian Academy of Sciences Email author 
  • , D. V. LyakinAffiliated withInstitute of Precision Mechanics and Control, Russian Academy of Sciences
  • , V. V. LychagovAffiliated withSaratov State University

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Longitudinal coherence of an optical field depending on the parameters of its frequency and angular spectra is considered. Expressions for the function and length of longitudinal coherence depending on the width of the frequency and angular spectra are obtained. The competitive influence of the angular and frequency spectra of the field on its longitudinal coherence is discussed. Experimental studies using a longitudinal shearing Michelson interferometer that proves theoretical results are performed.

PACS numbers

42.25.Kb 42.25.Hz