Fig. 1. (a) The device and (b) its working principle.

Fig. 2. The optical setup for testing the optically addressed spatial light modulator (SLM). CW, continuous-wave; PBS, polarizing beam splitter.

Fig. 3. The measured phase distribution with the shape ‘’.

Fig. 4. (a) The gray bitmap, (b) the measured phase distribution, and (c) the relationship of both when .

Fig. 5. The relationships of gray level and measured phase delay when the parameter is (a) 0.1, (b) 0.2, (c) 0.3, (d) 0.4, (e) 0.5, and (f) 0.6, respectively.

Fig. 6. The gray-phase curves obtained from experiments when the parameter is different.

Fig. 7. One-dimensional comparisons of designed phase distribution and measured phase distribution when the parameter is (a) 1.86 mm, (b) 3.72 mm, and (c) 5.58 mm, respectively.