DLC/BP ultra durable LWIR protective coatings for ZnS windows

Qiantao Li; Shijun Liu; Changxin Xiong

doi:10.1117/12.783548

14 November 2007 DLC/BP ultra durable LWIR protective coatings for ZnS windows

Qiantao Li, Shijun Liu, Changxin Xiong

Proceedings Volume 6722, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 67223T (2007) https://doi.org/10.1117/12.783548
Event: 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 2007, Chengdu, China

Abstract

DLC/BP ultra durable LWIR (long wave infrared) protective coatings have been designed and prepared on ZnS (Zinc Sulphide) windows successfully. Both of BP and DLC coatings are deposited by RF-PECVD (radio frequency enhanced plasma chemical vapor deposition) process, but in different chamber. The transmittance, micro-hardness and durability of DLC/BP coatings have been investigated, which are measured by FTIR spectroscopy, micro-hardness tester and simulative harsh environmental test system. The ZnS window outer face coated with DLC/BP coatings and inner face coated with high efficient antireflection coatings is also fabricated. In the band of 8~11.5μm, the measured maximum transmittance is above 93% and the average transmittance is about 89%. The coated ZnS windows meet with the demands of LWIR electro-optics systems workable in battlefield environment.

Citation Download Citation

Qiantao Li, Shijun Liu, and Changxin Xiong "DLC/BP ultra durable LWIR protective coatings for ZnS windows", Proc. SPIE 6722, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 67223T (14 November 2007); https://doi.org/10.1117/12.783548

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