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  • Title: Single-shot femtosecond-pulsed phase-shifting digital holography.
    Author: Kakue T, Itoh S, Xia P, Tahara T, Awatsuji Y, Nishio K, Ura S, Kubota T, Matoba O.
    Journal: Opt Express; 2012 Aug 27; 20(18):20286-91. PubMed ID: 23037080.
    Abstract:
    Parallel phase-shifting digital holography is capable of three-dimensional measurement of a dynamically moving object with a single-shot recording. In this letter, we demonstrated a parallel phase-shifting digital holography using a single femtosecond light pulse whose central wavelength and temporal duration were 800 nm and 96 fs, respectively. As an object, we set spark discharge in atmospheric pressure air induced by applying a high voltage to between two electrodes. The instantaneous change in phase caused by the spark discharge was clearly reconstructed. The reconstructed phase image shows the change of refractive index of air was -3.7 × 10(-4).
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