Growth of Potassium Iodate Single Crystals for Nonlinear Applications

Ruderman 9360879重要激光的有效谐波产生依赖于单晶的可用性，这些单晶具有非线性系数、高光学透明性、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，最近发现BBO和LBO晶体具有显著的优势。最近，山东大学中国分校的科学家报道了一项技术，即去孪晶和去除KIO_3晶体中的微区。他们发现，单区单晶KIO_3的非线性光学系数大于KDP、BBO和LBO。这使得KIO_3成为一种非常有吸引力的新型非线性晶体。我们提出了用三种方法从溶液中生长KIO_3，并研究了温度和压力对晶体去孪晶和去磁区效率的影响。测量了单区KIO_3的非线性光学系数、接受角和激光损伤阈值，以及700~1064 nm范围内二次和三次谐波激光辐射的转换效率。

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.