Dual beam deflection of liquid crystal optical phased array

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Dual beam deflection models based on one dimensional liquid crystal optical phased array (LCOPA) are discussed and compared in this letter. The far-field diffraction performance of the models is influenced by various impact factors, such as fill factor and fringing electric fields. For optimizing far-field diffraction performance, the combined influence of different impact factors is analyzed and a phase iterative algorithm which use the root-mean-square (RMS) phase deviation as a performance index is presented. The proposed algorithm is able to reduce phase deviation and improve the performance of far-field diffraction pattern at the same time. The simulation and experiments used in the letter effectively verify the proposed algorithm.
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