CAJ | 학술논문

利用周期极化反转的铌酸锂晶体设计与制备圆形周期单元六角结构排列的可调位相阵列器，对位相阵列器的Talbot效应光衍射成像进行理论和实验研究，得到了不同位相差和不同分数Talbot距离条件下阵列器近场衍射的理论仿真和实验观测图像，实验结果与理论研究相符。计算衍射场取样区域内平均强度，获得取样区内强度随位相差和Talbot距离变化的曲线，揭示了位相差和衍射位置对阵列器衍射强度分布的影响。
이용주기겁화반전적니산리정체설계여제비원형주기단원륙각결구배렬적가조위상진렬기，대위상진렬기적Talbot효응광연사성상진행이론화실험연구，득도료불동위상차화불동분수Talbot거리조건하진렬기근장연사적이론방진화실험관측도상，실험결과여이론연구상부。계산연사장취양구역내평균강도，획득취양구내강도수위상차화Talbot거리변화적곡선，게시료위상차화연사위치대진렬기연사강도분포적영향。
The tunable phase array with hexagon﹣lattice and round cell was designed and fabricated by use of periodically poled LiNbO3 crystal. Theoretical and experimental researches on the Talbot effect diffraction of phase array were presented. The simulated and experimental patterns of near field diffraction under various phases different and fraction Talbot distance were obtained. The results of experiment agreed with the results of the theoretical researches well. Average intensity of the selected area in diffraction field was calculated to get the relative intensity curves versus phase difference and distance. The effects on the intensity distribution of near﹣field diffraction from phase difference and Talbot distance were revealed.