Author Affiliations
Abstract
Institute of Applied Micro-Nano Materials, School of Science, Beijing Jiaotong University, Beijing 100044, China
A hexagonal array grating based on selective etching of a 2D ferroelectric domain inversion in a periodically poled MgO-doped LiNbO3 crystal is fabricated. The effects to the diffractive self-imaging as a function of diffraction distance for a fixed phase difference and array duty cycle of the grating is theoretically analyzed. The Talbot diffractive self-imaging properties after selective etching of a 2D ferroelectric domain inversion grating under a fixed phase difference are experimentally demonstrated. A good agreement between theoretical and experimental results is observed.
050.1950 Diffraction gratings 070.6760 Talbot and self-imaging effects 160.3730 Lithium niobate Chinese Optics Letters
2015, 13(2): 020502
基于菲涅耳衍射理论分析了畴腐蚀二维周期结构掺镁铌酸锂晶体光分束器的泰伯效应，对光分束器不同占空比D及泰伯分数β条件下的近场光衍射自成像进行了数值模拟研究。设计并制备了不同占空比的畴腐蚀掺镁铌酸锂晶体光分束器，并对其进行了分数泰伯光衍射自成像的实验研究，得到了不同泰伯分数β条件下的近场光衍射强度分布。结果表明，当光分束器占空比D=52%、泰伯分数β=2时，近场衍射自成像效果最佳，实验结果与理论研究结果相符。
光学器件 衍射 泰伯效应 掺镁铌酸锂 畴腐蚀 光分束器
