Growth of Potassium Iodate Single Crystals for Nonlinear Applications

Nd:YAG （1064 nm）和Ti:Sappahire （700-900 nm）等重要激光器谐波的有效产生取决于单晶的可用性，单晶具有非线性系数、高光学透明度、高激光损伤阈值和良好的物理性能。KDP, KD*P， LiIO3和CD* A晶体已经使用多年，最近BBO和LBO晶体被发现具有显着的优势。最近，中国山东大学的科学家们报道了一项在KIO3晶体中脱孪生和去除结构域的技术。他们发现单畴单晶KIO3的非线性光学系数大于KDP、BBO和LBO。这使得KIO3成为一种非常有吸引力的新型非线性晶体。我们提出用三种技术从溶液中生长KIO3，并研究温度和压力对生长晶体的脱孪和去除效率的影响。测量单畴KIO3的非线性光学系数、接收角、激光损伤阈值以及700 ~ 1064 nm激光辐射的二、三次谐波转换效率。

Ruderman 9360879 The efficient generation of the harmonics of important lasers such as Nd:YAG (1064 nm) and Ti:Sappahire (700-900 nm) depends upon the availability of single crystals which exhibit are nonlinear coefficients, high optical transparency, high laser damage threshold and good physical properties. KDP, KD*P, LiIO3 and CD* A crystals have been used for many years, and more recently BBO and LBO crystals have been found to offer significant advantages. Very recently, scientists at Shandong University in China reported on a technique or detwinning and removing domains in KIO3 crystals. They found that the nonlinear optical coefficient of single domain single crystal KIO3 was larger than that of KDP, BBO, and LBO. This makes KIO3 a very attractive new nonlinear crystal. We propose to grow KIO3 from solution by three techniques and to study the effects of temperature and pressure on the efficiency of detwininning and domain removal of as-grown crystals. The nonlinear optical coefficient, acceptance angel, and laser damage threshold of single domain KIO3 will be measured as well as the conversion efficiency for second and third harmonic generation of laser radiation form 700 to 1064 nm.