Fig. 1. Schematic diagram of working principle of reflective LC-SLM

Fig. 2. Measurement system of digital holography

Fig. 3. Experimental setup of digital holography measurement system

Fig. 4. Experimental results of digital holography. (a) Driving image of continuous gray level; (b) digital image-plane hologram; (c) unwrapped phase image; (d) three-dimensional image of unwrapped phase; (e) average phase value of each pixel column in unwrapped phase image; (f) modulation characteristic curve of phase and gray level

Fig. 5. Experimental results of Twyman-Green interferometry. (a) Driving grayscale image; (b) interferogram of LC-SLM; (c) phase modulation characteristics and normalized intensity curves

Fig. 6. Comparison of experiment results of two methods

Fig. 7. Results of phase nonlinearity compensation. (a) Modulation characteristic curve of phase and gray level before compensation; (b) curve of gray look up table; (c) modulation characteristic curve of phase and gray level after compensation

Fig. 8. Modulation characteristic curves of phase and gray level under different wavelengths