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发明授权
CN106290255B 1700nm～2500nm中部红外折射率的测试方法 有权

1700nm～2500nm中部红外折射率的测试方法
摘要：
本发明提供一种中红外折射率的测试方法，该方法包括以下步骤：1)将精密测角仪调零；2)将样品放置在载物台上，测定样品顶角A；3)找到该谱线的最小偏向角位置，然后通过公式计算得出2050nm～2060nm折射率；4)切换到汞灯光源，找到1950nm～1980nmnm的最小偏向角度，通过公式计算得出1950nm～1980nm折射率；5)参照2050nm～2060nm的最小偏向角原始值，找到该谱线的最小偏向角位置，通过公式计算得出2300nm～2330nm折射率。本发明通过氦灯和汞灯在红外波段的特征光谱曲线特征，再根据精密测角仪对中红外波长折射率测试，测试方法简单，且具有较高的测试精度。
摘要（英）：

The invention provides a test method for a middle infrared refractive index. The method comprises the following steps: (1) zeroing a precision goniometer; (2) placing a sample on an objective table, and measuring a vertex angle A of the sample; (3) finding the position of a minimum deviation angle of a spectral line, and then calculating the refractive index of 2,050 nm to 2,060 nm through a formula; (4) switching to a mercury lamp light source, finding the minimum deviation angle of 1,950 nm to 1,980 nm, and calculating the refractive index of 1,950 nm to 1,980 nm through the formula; (5) finding the position of the minimum deviation angle of the spectral line according to an original value of the minimum deviation angle of 2,050 nm to 2,060 nm, and calculating the refractive index of the 2,300 nm to 2,330 nm. According to the features of feature spectral lines of a helium lamp and a mercury lamp in an infrared waveband and the test on the middle infrared refractive index by the precision goniometer, the test method is simple and relatively high in test precision.

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