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Resolution-enhanced Fourier transform method for the estimation of multiple phases in interferometry.
Journal article

Resolution-enhanced Fourier transform method for the estimation of multiple phases in interferometry.

  • Langoju R Applied Computing and Mechanics Laboratory, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.
  • Patil A
  • Rastogi P
  • 2006-01-05
Published in:
  • Optics letters. - 2005
English A phase shifting method based on high-resolution frequency estimation and Fourier transform technique is introduced. This method, also referred to as the eigenvector method, draws on the complementary strengths of both these methods. The salient feature of the method lies in its ability to handle nonsinusoidal wave-forms, multiple piezoelectric transducers, and arbitrary phase steps in an optical configuration. The method does not need the addition of carrier fringes to separate the spectral contents in the intensity fringes. The proposed concept thus overcomes the limitations of methods based on Fourier transform techniques. The robustness of the proposed method is studied in the presence of noise.
Language
  • English
Open access status
closed
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Persistent URL
https://sonar.ch/global/documents/96723
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