Original scientific paper

Strategy of design of sophisticated optical multilayers

Hrvoje Zorc ; Ruđer Bošković Institute, P. O. Box 1016, HR-10001 Zagreb, Croatia

Abstract

The demand for very special optical coatings, having unusual optical characteristics that have no similarities with the traditional coatings, steadily increases. Typical examples are colour temperature converters, some types of narrow band reflectors, etc. A thin-film designer often encounters the very well known problem of the starting design. In this paper, a strategy of multilayer design is described. Taking an example, the target function is defined and then the complete design procedure is illustrated. The use of only two popular optical multilayer materials, namely SiO2 and TiO2 is assumed. BK7 glass and air are assumed as surrounding media. In all analysed cases, only a certain number of alternating layers can be assumed as the starting point of the design procedure. The method of global multilayer design is used in the first step, it is followed by the Tikhonravov's design method, and finally by the gradient refinement. Other possible ways and methods are discussed, and some hints are given.

Keywords

Hrčak ID:

299478

URI

https://hrcak.srce.hr/299478

Publication date:

2.5.1995.

Article data in other languages: croatian

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