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High-Speed, Short-Pulse-Duration Light Source for Digital Inline Holographic Imaging of Multiphase Flow Fields

In preparation for ballistic-range testing, we develop a Digital Inline Holography (DIH) capability as applied to a simple jet flow in the lab. To address the challenges specific to a ballistic range, we devise a laser diode light source for DIH which may be spatially filtered and pulsed at high repetition rates with very short exposure times. We use this light source to record holograms of a droplet falling into a jet flow and process them with HoloSand.