Interference Condition for Thin Films薄 films 的干涉条件
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Index Interference concepts 索引干涉概念 | |||
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Reflection Phase Change反射相位变化
Reflected light will experience a 180 degree phase change when it reflects from a medium of higher index of refraction and no phase change when it reflects from a medium of smaller index. Note below that the reflection when traveling from air at n=1 to oil at n = 1.4 experiences the phase change, but from oil to water at n = 1.33 there is no phase change. This phase change is important in the interference which occurs in thin films, the design of anti-reflection coatings, interference filters, and thin film mirrors. 反射光在从折射率较高的介质反射时会经历180度的相位变化,而在从折射率较低的介质反射时则没有相位变化。注意下面的情况:从空气(n=1)到油(n=1.4)反射时会发生相位变化,但从油(n=1.33)到水反射时则没有相位变化。这种相位变化在薄膜干涉、抗反射涂层设计、干涉滤光片和薄膜镜中非常重要。
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Index Interference concepts Reflection concepts 索引干涉概念 反射概念 | ||
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Reflection Phase Change反射相位变化
Reflected light will experience a 180 degree phase change when it reflects from a medium of higher index of refraction and no phase change when it reflects from a medium of smaller index. This phase change is important in the interference which occurs in thin films, the design of anti-reflection coatings, interference filters, and thin film mirrors. 当光从折射率较高的介质反射时,会经历180度的相位变化;而当光从折射率较低的介质反射时,则不会发生相位变化。这种相位变化在薄膜干涉、抗反射涂层设计、干涉滤光片以及薄膜镜中起着重要作用。
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Index Interference concepts Reflection concepts 索引干涉概念 反射概念 | ||
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