ABSTRACT
This chapter discusses some results of Mach–Zehnder holographic interferometry operating with low carrier frequency holograms applied to four different phase objects under investigation. The object and reference arms of the Mach–Zehnder interferometer are located in the horizontal plane. One of the main problems in classic interferometry is the basic lack of continuous interference data. In any given image, only a limited number of fringes cross any line along which quantitative data are desirable; therefore, they are obtained in a series of runs. The Mach–Zehnder scheme was used for making low spatial frequency holograms on Agfapan APX 25 and on Agfa microfilm. One of the reconstructed interferograms with interference fringes perpendicular to the suspending fiber. The chapter reports on the first use of holographic interferometry to study the generation and dynamics of finite amplitude acoustic waves in alcohol.
