Share Email Print
cover

Optical Engineering

Role Of Hard Carbon In The Field Of Infrared Coating Materials
Author(s): A. Bubenzer; B. Dischler; G. Brandt; P. Koidl
Format Member Price Non-Member Price
PDF $20.00 $25.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Amorphous hydrogenated hard carbon (a-C:H) is a promising new optical coating material for passive infrared materials. It offers the rare combination of extreme hardness, chemical inertness, and optical transparency over a wide spectral range. We give an overview of the optical properties of rf-plasma deposited a-C:H coatings and compare them with vacuum-evaporated infrared coatings. For many applications, a-C:H solves the problem of a mechanically and chemically resistant 8 to 12 Am coating despite its moderate absorption in the 6 to 20 Am range. The tunability of the refractive index between 1.8 and 2.2 allows single layer coatings on Si and Ge with zero reflection. State-of-the-art applications, possible future developments, as well as remaining technological problems of a-C:H are discussed.

Paper Details

Date Published: 1 April 1984
PDF: 4 pages
Opt. Eng. 23(2) 232153 doi: 10.1117/12.7973404
Published in: Optical Engineering Volume 23, Issue 2
Show Author Affiliations
A. Bubenzer, Fraunhofer-Institut fur Angewandte Festkorperphysik (Federal Republic of Germany)
B. Dischler, Fraunhofer-Institut fur Angewandte Festkorperphysik (Federal Republic of Germany)
G. Brandt, Fraunhofer-Institut fur Angewandte Festkorperphysik (Federal Republic of Germany)
P. Koidl, Fraunhofer-Institut fur Angewandte Festkorperphysik (Federal Republic of Germany)


© SPIE. Terms of Use
Back to Top