【摘要】 准周期材料的研究是凝聚态物理学的热门课题之一．我们利用外电场室温极化技术，成功地制备了准周期ＬｉＴａＯ３超晶格，首次获得了高效、多波长的二次谐波输出．对应的基波波长分别为０９７６２，１０８４６，１２８３４，１３６５０和１５６９９μｍ．更多还原

【Abstract】 Quasiperiodic materials research is an important development in condensed matter physics.Using the external field poling technique at room temperature,we have designed and fabricated a novel quasiperiodic nonlinear optical superlattice of LiTaO 3,obtaining for the first time high efficiency and multiwavelength quasi phase matched second harmonic output.The fundamental wavelength was tuned to 0 9762,1 0846,1 2834,1 3650 and 1 5699μm,respectively.更多还原