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ASTM Selected Technical Papers
Laser Induced Damage In Optical Materials: 1980
By
HE Bennett
HE Bennett
1
Naval Weapons Center
?
China Lake, California 93555Co-Chairmen
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AJ Glass
AJ Glass
2
Lawrence Livermore Laboratories
?
Livermore, California 94550Co-Chairmen
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AH Guenther
AH Guenther
3
Air Force Weapons Laboratory, Kirtland Air Force Base
,
New Mexico 87117Co-Chairmen
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BE Newnam
BE Newnam
4
Los Alamos Scientific Laboratory
?
Los Alamos, New Mexico 87545Co-Chairmen
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ISBN-10:
0-8031-4500-4
ISBN:
978-0-8031-4500-9
No. of Pages:
487
Publisher:
ASTM International
Publication date:
1981

The use of thin films of ion-beam deposited diamond-like carbon (DLC) appears to provide a number of properties that could result in improved optical elements (windows, mirrors) for high powered lasers. Many of these properties have already been described.

Of particular importance for high powered lasers is the ultra-smooth nature of the ion-beam deposited DLC plus its transparency, chemical intertness, and barrier properties. Several mechanisms predict and explain why DLC films are observed to be smoother than the substrate, and can result in improved transmission and reflection coefficients. The problem of high power surface breadkown associated with microscopic irregularities in the substrate can be reduced as a result of the ion-beam deposition energy and the smoothing effects of a film of ion-beam diamond-like carbon. The relationship of DLC to high power breakdown at surface defects, as well as plasma breakdown will be discussed to show how the ion-beam diamond-like carbon coating can improve performance.

1.
Aisenberg
S.
,
Chabot
R.
, “
Ion Beam Deposition of Thin Films of Diamond-Like Carbon
”,
J. Appl. Phys.
 0021-8979 
42
,2953, (
1971
)
2.
Aisenberg
S.
,
Chabot
R.
, “
Physics of Ion Plating and Ion Beam Deposition
”,
J. Vac. Sci. Tech.
10
,104,(
1973
)
3.
U.S. Patent No. 3,904,505,
09
09
1975
,
Apparatus for Film Deposition
, By S. Aisenberg
4.
U. S. Patent No. 3,961,103,
01
06
1976
.
Film Deposition
, By S. Aisenberg
5.
Spencer
E. G.
,
Schmidt
P. H.
,
Joy
P. C.
, and
Sansalone
F. J.
, “
Ion Beam Deposited Polycrystalline Diamond-Like Films
”,
Appl. Phys. Letters
,
29
,118,(
1976
)
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