材料科学
温度系数
波长
硅
干涉测量
大气温度范围
光学
谐振器
温度测量
兴奋剂
晶体硅
光电子学
物理
复合材料
热力学
作者
G. Cocorullo,Francesco G. Della Corte,Ivo Rendina
摘要
The temperature dependence of the thermo-optic coefficient for crystalline silicon has been measured in the temperature range between room temperature and 550 K at the wavelength of 1523 nm by means of an interferometric technique. This technique, which requires a very simple experimental setup, is based on the observation of the fringe pattern produced by temperature changes in a Fabry–Perot resonator. Measurement results indicate that the thermo-optic coefficient is independent on the sample doping and crystal plane orientation. The experimental data appear to be in agreement with the few values reported to date at this important wavelength. The temperature dependence of the excitonic band gap is also calculated by fitting these data with a recently introduced model of ∂n/∂T.
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