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Evaluation of Diamond-Like Carbon as a Protective Coating for Holographic Filters

Published online by Cambridge University Press:  21 February 2011

Pearl W. Yip  and
Peter G. Dehmer
Pearl W. Yip
Affiliation:
Rome Laboratory/ERX, Hanscom AFB, MA 01731
Peter G. Dehmer
Affiliation:
U.S. Army Research Laboratory, Watertown, MA 02172
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Abstract

Diamond-like carbon (DLC), a hard, optically transparent, and chemically inert material, is becoming increasingly important for many applications. With the development of low-temperature deposition techniques, DLC can now be applied to many heat-sensitive polymers. This paper will discuss the application of a DLC coating as an abrasion and moisture barrier for three different laser-protective holographic filters. The objective of this investigation is to study the influence of the coating process on the holographic filters, and to determine the effectiveness of the DLC coating as the environmental seal for these filters. The DLC coated filters were characterized by UV/visible spectroscopy, scanning electron microscopy, before and after exposure in an environmental chamber set at 71°C, and 90% humidity. The structure and hardness of the DLC coating were evaluated respectively by Raman spectroscopy and nanoindentation method.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 356: Symposium B2 – Thin Films: Stresses and Mechanical Properties V , 1994 , 887
Copyright
Copyright © Materials Research Society 1995

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