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Bulgarian Journal of Physics
Print: 1310-0157 Online: 1314-2666
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RECOGNIZED BY THE EUROPEAN PHYSICAL SOCIETY 
Bulg. J. Phys. vol.25 no.1-2 (1998), pp. 038-048
Multilayer Symmetrical Dielectric Stacks for Needs of Near IR Heat Reflector Design
M. Nenkov, T. Pencheva
Department of Physics, Russe University, 8 Students/ca Str., 7017 Russe
go backDepartment of Physics, Russe University, 8 Students/ca Str., 7017 Russe
Abstract. The investigation deals with capabilities of multilayer dielectric stacks of symmetrical periods for needs of near IR heat reflectors design. The main problems are connected with suppression of high-reflection zones in the visible spectral region and uniform covering of the IR region by high-reflectance zones. It is shown that periods of ABA type may be used for high reflectance up to 1.52 μm. For high reflectance at longer wavelengths more complicated periods should be used.