机构地区: 中山大学物理科学与工程技术学院物理系
出 处: 《中山大学学报(自然科学版)》 1998年第6期35-39,共5页
摘 要: 采用分段多项式拟合的方法处理椭圆偏振光谱测试数据,可以同时得到样品的厚度和光学常数谱.2个计算实例,①为SiO2薄膜,②为新型的掺镧的锆钛酸铅(PLZT)非晶类铁电薄膜.该方法精度高,具有较好的通用性. The sample thickness and its optical contant spectra can be obtained simultaneously by fitting the measured spectroscopic ellipsometry data with piecewise polynomials.Two illustrative examples(SiO 2 film,lead lanthanum zirconate titanate(PLZT) amorphous ferroelectric like thin film) are presented to demonstrate that this technique is very precise and can be used generally.