Magnetorheological finishing of IR materials

Stephen D. Jacobs, Fuqian Yang, Edward M. Fess, J. B. Feingold, Birgit E. Gillman, William I. Kordonski, Harold Edwards, Donald Golini

Research output: Contribution to journalConference articlepeer-review

40 Citations (SciVal)


Magnetorheological finishing (MRF) is a subaperture lap, deterministic process developed at the Center for Optics Manufacturing. MRF can remove subsurface damage from an optical component while correcting figure errors and smoothing small scale microroughness. The "standard" magnetorheological fluid for finishing of optical glasses consists of magnetic carbonyl iron and nonmagnetic cerium oxide particles in water. This composition works well for a variety of soft and hard glass types, but it does not perform adequately for certain single crystal materials and polycrystalline compounds used in IR applications. In this paper, we describe modifications to MRF and finishing experiments for LiF, ZnSe, CaF 2, AMTIR-1, ZnS, MgF 2, sapphire, and CVD diamond.

Original languageEnglish
Pages (from-to)258-269
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1997
EventOptical Manufacturing and Testing II - San Diego, CA, United States
Duration: Jul 27 1997Jul 27 1997


  • AMTIR-1
  • CVD diamond
  • CaF
  • IR materials
  • LiF
  • Magnetorheological finishing
  • MgF
  • Sapphire
  • Subaperture lap
  • ZnS
  • ZnSe

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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