title: Single-shot femtosecond-pulsed phase-shifting digital holography.
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).
authors.affiliation: Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Kakue
authors.forename: Seiya
authors.initials: S
authors.lastname: Itoh
authors.forename: Peng
authors.initials: P
authors.lastname: Xia
authors.forename: Tatsuki
authors.initials: T
authors.lastname: Tahara
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Awatsuji
authors.forename: Kenzo
authors.initials: K
authors.lastname: Nishio
authors.forename: Shogo
authors.initials: S
authors.lastname: Ura
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Kubota
authors.forename: Osamu
authors.initials: O
authors.lastname: Matoba
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D006696:Holography / Q000295:instrumentation*; D007089:Image Enhancement / Q000295:instrumentation*; D007090:Image Interpretation, Computer-Assisted / Q000295:instrumentation*; D021621:Imaging, Three-Dimensional / Q000295:instrumentation*; D012031:Refractometry / Q000295:instrumentation*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*