Shockwave visualization using holographic interferometer

Abstract

High-speed holographic interferometry was employed to visualize and record shockwave phenomena. We performed three kinds of holographic interferometry for visualization and recording of the propagation of a shockwave: a real-time holographic interferometer with a high-speed framing camera, a real-time holographic interferometer with a high-speed streak camera and a double-pulse laser holographic interferometer with a dual-reference-beam module. The experimental results were compared and their advantages and disadvantages are discussed. The experimental results clearly show the high-speed shockwave propagation and give the feasibility of quantitative interpretation of high-speed gas-dynamics.