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Simultaneous acquisition of pi/2 phase-stepped interferograms with a photorefractive Bi12GeO20 crystal: application to real-time double-pulse holography

Abstract : We present a novel method for real-time analysis of vibrations in double-pulse laser holography. Two pi/2 phase-stepped interferograms are obtained simultaneously. An experimental demonstration gives a phase measurement with an accuracy of 4±.
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Laurent Labrunie, Gilles Pauliat, Gérald Roosen, Jean-Claude Launay. Simultaneous acquisition of pi/2 phase-stepped interferograms with a photorefractive Bi12GeO20 crystal: application to real-time double-pulse holography. Optics Letters, Optical Society of America, 1995, 20 (15), pp.1652-1654. ⟨hal-00856958⟩

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