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Proceedings Paper

Analyzing quasi-inhomogeneous coating designs with standard optical thin film software
Author(s): Fred T. Goldstein
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Paper Abstract

The optical properties of quasi-inhomogeneous coatings are calculated with standard off-the- shelf optical thin film software running Microsoft Windows. The standard program includes a fast algorithm for repeated groups of layers and allows small index gradations. Index values and layer recipes are generated separately in programs written in Microsoft Excel. These programs approximate inhomogeneous models by the quasi-homogeneous designs required by the standard program. Data is sent to and from the thin film program by dynamic data exchange and the Windows clipboard. The thin film program can be treated as a subroutine. Continuous looping is possible and spectral data is passed back to Excel for analysis. This seamless integration of standard and user-modifiable software was not readily achieved in older operating systems. As an example we discuss an Excel tolerance model for a graded index antireflection design. Thicknesses are subject to random fluctuations simulating manufacturing errors.

Paper Details

Date Published: 2 November 1993
PDF: 5 pages
Proc. SPIE 2046, Inhomogeneous and Quasi-Inhomogeneous Optical Coatings, (2 November 1993); doi: 10.1117/12.163556
Show Author Affiliations
Fred T. Goldstein, FTG Software Associates (United States)

Published in SPIE Proceedings Vol. 2046:
Inhomogeneous and Quasi-Inhomogeneous Optical Coatings
Jerzy A. Dobrowolski; Pierre G. Verly, Editor(s)

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