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year 28, Issue 2 (ICOP & ICPET 2022 2022)
ICOP & ICPET _ INPC _ ICOFS 2022, 28(2): 691-694 |
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Marashi S A, rezvanijalal M, Abdykian A. Study of Anti-reflection Coating for Incoherent Light Taking into Account the Thickness Fluctuation of the Layer. ICOP & ICPET _ INPC _ ICOFS 2022; 28 (2) :691-694
URL: http://opsi.ir/article-1-2782-en.html
URL: http://opsi.ir/article-1-2782-en.html
Abstract: (605 Views)
In this paper, the reflection of an anti-reflection coating is calculated for the case where the coating has thickness fluctuation and the light is considered to be incoherent. To find the reflection, the technique of optical transfer matrix is used. A computational code in Mathematica language is written to find the reflection value in the presence of arbitrary thickness fluctuation and coherence length. It is found from the computation results that inclusion of any value of fluctuation or coherence causes the minimum reflection to be no longer zero. On the other hand, the calculations show that the minimum value of reflection occurs at a refractive index that is rather different from the familiar nc=(nsnm)1/2 relation, where ns and nm are refractive indices of substrate and upper medium, respectively, and nc is refractive index of the coating.
Type of Study: Experimental |
Subject:
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