Hydrothermal growth of KTiOPO_(4) crystal for electro-optical application  

作　　者：Haitao Zhou Xiaoling He Wenyuan Wu Jingfang Tong Jinliang Wang Yanbin Zuo Yicheng Wu Changlong Zhang Zhanggui Hu 

机构地区：[1]Tianjin Key Laboratory of Functional Crystal Materials,Institute of Functional Crystals,School of Materials Science and Engineering,Tianjin University of Technology,300384 Tianjin,China,Guangxi [2]Key Laboratory of Superhard Materials,China Nonferrous Metals(Guilin)Geology and Mining Co.,Ltd,541004 Guilin,China

出　　处：《Light(Science & Applications)》2023年第1期40-59,共20页光（科学与应用)（英文版）

基　　金：supported by the National Natural ScienceFoundation of China(51890864 and 60378032);the National High-tech R&D Programof China(2006AA030110);the National Key R&D Program of China(SQ2021YFB3600023,SQ2020YFF0405730);the Scientific Research and Technology Development Program of Guangxi(1348018-7,10123002-14,0630004-3B,AA17204068,and AD17195087);the Science and technology Development Plan of China Nonferrous Metal Mining Group(2018KUJH08,and 2014KJJH03).

摘　　要："New"electro-optical(EO)crystals are hard to find,"old"EO crystals are scarce and each has its own problems,and the demand for high-performance EO crystals by higher power,higher repetition rate,and narrower pulse width laser is realistic and urgent.The EO performance of KTP was recognized as soon as it was discovered,but after more than 40 years of development,the reports,and products of EO devices based on KTP are less than those of other EO crystals,even though KTP is now almost the cheapest nonlinear optical crystal material.In this paper,based on our understanding of the crystal structure of predecessors and ourselves,especially the understanding and practice of quasi-one-dimensional ionic conduction mechanism,we think that crystal growth is the most important reason that affects the controllability of crystal performance.Through a series of science and technology,we realize the growth of large-size crystals with high-optical uniformity,then reduce the absorption of KTP to a very low level,and grow crystals with resistance to electric damage and laser damage.On this basis,reducing the conductivity and improving the uniformity of optical,electrical,piezoelectric,and ferroelectric properties are emphasized.The extinction ratio,piezoelectric ringing effect,and thermal influence of the EO switch based on KTP crystal are tested,and some publicly available progress of using KTP EO devices in high-repetition rate laser is listed.Finally,we are looking forward to the development of KTP EO crystal for the laser system to EO generator for integrated optics.

关 键 词：CRYSTAL REPETITION PIEZOELECTRIC 

分 类 号：TN2[电子电信—物理电子学]