Technique for the removal of speckle phase in electronic speckle interferometry

Bruno F. Pouet, Sridhar Krishnaswamy

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


It is shown that the speckle nature of electronic speckle pattern interferometry images can be reduced in quasireal time with the use of only three consecutive video images. By use of additive–subtractive phase modulation processing the technique is essentially insensitive to environmental noise, and distortion of fringes does not occur. By further removing the random speckle phase we show, using speckle statistics, that the number of dark speckles in the resulting fringe pattern is close to zero.

Original languageEnglish (US)
Pages (from-to)318-320
Number of pages3
JournalOptics Letters
Issue number3
StatePublished - Feb 1995

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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