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Proceedings Article

Hard infrared black coating with very low outgassing

[+] Author Affiliations
Paul J. Kuzmenko, Daniel M. Behne

Lawrence Livermore National Lab. (United States)

T. Casserly, W. Boardman, D. Upadhyaya, K. Boinapally, M. Gupta, Y. Cao

Sub-One Technology, Inc. (United States)

Proc. SPIE 7018, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, 701852 (July 14, 2008); doi:10.1117/12.788006
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From Conference Volume 7018

  • Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation
  • Eli Atad-Ettedgui; Dietrich Lemke
  • Marseille, France | June 23, 2008

abstract

Infrared astronomical instruments require absorptive coatings on internal surfaces to trap scattered and stray photons. This is typically accomplished with any one of a number of black paints. Although inexpensive and simple to apply, paint has several disadvantages. Painted surfaces can be fragile, prone to shedding particles, and difficult to clean. Most importantly, the vacuum performance is poor. Recently a plasma enhanced chemical vapor deposition (PECVD) process was developed to apply thick (30 μm) diamond-like carbon (DLC) based protective coatings to the interior of oil pipelines. These DLC coatings show much promise as an infrared black for an ultra high vacuum environment. The coatings are very robust with excellent cryogenic adhesion. Their total infrared reflectivity of < 10% at normal incidence approaches that of black paints. We measured outgas rates of <10-12 Torr liter/sec cm2, comparable to bare stainless steel.

© (2008) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Paul J. Kuzmenko ; Daniel M. Behne ; T. Casserly ; W. Boardman ; D. Upadhyaya, et al.
"Hard infrared black coating with very low outgassing", Proc. SPIE 7018, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, 701852 (July 14, 2008); doi:10.1117/12.788006; http://dx.doi.org/10.1117/12.788006


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