科研之友
微信
新浪微博
Facebook
分享链接
摘要
A high-accuracy method for determining the chemical composition of non-stoichiometric lithium niobate crystals is proposed based on precise measurements of birefringence of thin substrates using the laser ellipsometry in transmission. It is shown that, for compensators made of LiNbO(3), this method allows one to monitor the ratio Li/(Li Nb) with an accuracy of up to similar to 10(-8) at lambda = 0.6328 mu m. The accuracy is limited by temperature fluctuations of the crystal.
- 出版日期2009-8
