Wideband antireflection coatings on germanium and filters for second optical window

Jerzy Ciosek; Jozef Firak; Urszula Stanislawek; Miroslaw Kwasny; Krzysztof Kopczynski

doi:10.1117/12.531766

6 October 2003 Wideband antireflection coatings on germanium and filters for second optical window

Jerzy Ciosek, Jozef Firak, Urszula Stanislawek, Miroslaw Kwasny, Krzysztof Kopczynski

Proceedings Volume 5230, Laser Technology VII: Progress in Lasers; (2003) https://doi.org/10.1117/12.531766
Event: 2003 Chapter books, 2003, Bellingham, WA, United States

Abstract

The investigation results of wideband (8-12 μm) antireflection coatings on germanium substrate and spectral characteristics of interference wideband filter for spectral range of 8-12 μm are presented. For design of filters and antireflection coatings the following layer materials were used: Ge, ZnS and Mira, and substrate materials such as: Ge for antireflection coatings and ZnSe for interference filters. Wideband filter for the range of 8-12 μm requires application of additional two filters cutting off radiation from the range of 1-7 μm. The cutting off filters are interference filters for which construction germanium, Mira, and ZnS were used. The constructions of basic and cutting off filters were designed considering technical possibilities of vacuum device BAK 550 of the Balzers firm.

Citation Download Citation

Jerzy Ciosek, Jozef Firak, Urszula Stanislawek, Miroslaw Kwasny, and Krzysztof Kopczynski "Wideband antireflection coatings on germanium and filters for second optical window", Proc. SPIE 5230, Laser Technology VII: Progress in Lasers, (6 October 2003); https://doi.org/10.1117/12.531766

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