Figure 5 | Scientific Reports

Figure 5

From: Double-frequency grating shearing interferometer with built-in phase-shifting function for robust multi-level phase retrieval

Figure 5

Simulation for the decoded phase signals of the PSI, DFGSI-PSI, and pre-integral-DFGSI-PSI under different disc rotation amounts of 0 μm, 0.2 μm, 0.4 μm, 0.6 μm, 0.8 μm, and 1.0 μm. Where the horizontal axis of each picture is retrieved phase, the vertical axis of each picture is the count of occurrence, the bright-red curve is the histogram for the coding signal 0, the green curve is the histogram for the coding signal 0.5π, the deep-blue curve is the histogram for the coding signal π, the light-blue curve is the histogram for the coding signal 1.5π, and the light-red curve is the histogram for the coding signal 2π.

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