| 由红外透过谱确定金刚石膜的光学常数及相关因素 |
| |
| 引用本文： | 张继华,孙亦宁,李敬起,郭晚土,高欣.由红外透过谱确定金刚石膜的光学常数及相关因素[J].真空与低温,2001,7(3):144-148. |
| |
| 作者姓名： | 张继华 孙亦宁 李敬起 郭晚土 高欣 |
| |
| 作者单位： | 兰州物理研究所,甘肃,兰州,730000 |
| |
| 摘 要： | 结合金刚石膜的具体情况,考虑到色散效应、膜的微结构、表面粗糙度及样品中自由载流子和C-H的吸收等多种因素对红外透过谱的影响,在无吸收单层膜透过率模型的基础上进行了修正,给出了自支撑金刚石薄膜透过率的数学模型.并对不同制备方法和工艺参数下沉积的金刚石膜的红外透过谱用Levenberg-Mar-quardt算法进行非线性最小二乘拟合,从而确定出样品的红外光学常数和其它影响透过率的因素.这些结果对正确分析金刚石薄膜的红外光学性质是很重要的.
|
| 关 键 词： | 光学常数 透过率 金刚石 |
| 文章编号： | 1006-7086(2001)03-0144-05 |
| 修稿时间： | 2001年3月5日 |
DETERMINATION OF THE OPTICAL CONSTANTS AND RELATED FACTORS OF DIAMOND FROM TRANSMISSION MEASUREMENTS |
| |
| ZHANG Ji_hua,SUN Yi_ning,LI Jing_qi,GUO Wan_tu,GAO Xin.DETERMINATION OF THE OPTICAL CONSTANTS AND RELATED FACTORS OF DIAMOND FROM TRANSMISSION MEASUREMENTS[J].Vacuum and Cryogenics,2001,7(3):144-148. |
| |
| Authors: | ZHANG Ji_hua SUN Yi_ning LI Jing_qi GUO Wan_tu GAO Xin |
| |
| Abstract: | By combining the reality of CVD diamond,transmittance model of free standing diamond films was derived.In the model,several factors affect transmittance such as chromatic dispersion, optical non_uniformity, surface roughness and absorption of the graphite (free carries) and carbon-hydrogen bonding in the sample-were considered.IR spectra of diamond was non_linear least square fitted(NLSF) by Levenberg_Marquardt algorithm.Reliable frequency dependence of n and k, together with thickness,surface roughness,impurities and microstructure were then obtained.This result will be important for a correct analysis of the IR properties of diamond films. |
| |
| Keywords: | optical constants transmittance diamond |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
