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Anisotropic protective coating for brewster angle windows
G Surdutovich1, R Vitlina, V Baranauskas
1Departamento de Semicondutores, Instrumentos e Fotônica, Faculdade de Engenharia Elétrica e de Computacão, Unicamp, CEP 13083-970, Campinas, São Paulo, Brazil. gregory@dsif.fee.unicamp.br
We developed a new dielectric anisotropic coating to protect Brewster angle windows. This multilayer coating maintains optical quality and is less sensitive to surface damage due to its thickness-independent performance.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- Brewster angle windows are critical optical components.
- Maintaining optical quality during window protection is challenging.
Purpose of the Study:
- To propose a novel dielectric anisotropic coating for Brewster angle windows.
- To ensure the coating protects windows without optical degradation.
Main Methods:
- Designing a multilayer two-component structure.
- Calculating dielectric permittivities and component concentrations.
- Presenting examples for Zinc Selenide (ZnSe) windows.
Main Results:
- The proposed coating is of arbitrary thickness.
- Optical quality is preserved, unaffected by precise thickness.
- Two specific anisotropic coating examples for ZnSe are provided.
Conclusions:
- The novel dielectric anisotropic coating effectively protects Brewster angle windows.
- The coating's thickness independence enhances robustness against surface damage.
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