Abstract
To improve the steering precision and angular resolution of liquid-crystal optical phased array, in this paper, we proposed a modified periodic phase controlled method to realize a continuous scanning with a constant angular resolution of less than 20 μ rad, meanwhile, its precision is less than 5 μ rad (rms). Also, another method we proposed is called subaperture coherence that can realize even better angular resolution less than 5 μ rad, which is the limitation of our measurement instrument.
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