Holographic Interferometry

6

Mach–Zehnder Real-Time Shearing Optical Holographic Interferometry

6.1  Real-Time Holographic Interference Shearing Technique for Wind Tunnel Testing

6.1.1  Concept of Design of Real-Time Holographic Shearing Interferometer

The method described in this section (see Reference [76]) is in some respects related to real-time reference beam holographic interferometry described in References [8, 9] (see Section 2.3.3). For experiments, the optical scheme presented in Figure 4.1 was used as the basis for designing an applicable setup that meets requirements of the real-time approach. The proposed optical scheme of the receiver is shown in Figure 6.1(a). The only principal addition to it in comparison with Figure 4.1 is the Mach–Zehnder comparison ...