Multiple phase-shifted interferograms obtained from a single interferogram with linear carrier

✍ Scribed by José A. Ferrari; Erna M. Frins

• Book ID: 104073492
• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 931 KB
• Volume: 271
• Category: Article
• ISSN: 0030-4018
• DOI: 10.1016/j.optcom.2006.10.012

✦ Synopsis

In this paper we propose a new method for phase retrieval in an interferogram with a spatial linear carrier. We demonstrate that from the primary interferogram one can extract multiple interferograms (with lower resolution than the original one) with arbitrary phase-shift amounts between them. Then, by applying well-known phase-shifting algorithms, from these phase-shifted interferograms the phase can be retrieved. The method does not require sophisticated data-processing and is computationally efficient. Numerical simulations and validation experiments are presented.