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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 27 — Sep. 20, 2012
  • pp: 6612–6617

Super-smooth surface fabrication technique and experimental research

Linghua Zhang, Junlin Wang, and Jian Zhang  »View Author Affiliations

Applied Optics, Vol. 51, Issue 27, pp. 6612-6617 (2012)

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Wheel polishing, a new optical fabrication technique, is proposed for super-smooth surface fabrication of optical components in high-precision optical instruments. The machining mechanism and the removal function contours are investigated in detail. The elastohydrodynamic lubrication theory is adopted to analyze the deformation of the wheel head, the pressure distribution, and the fluid film thickness distribution in the narrow machining zone. The pressure and the shear stress distributions at the interface between the slurry and the sample are numerically simulated. Practical polishing experiments are arranged to analyze the relationship between the wheel–sample distance and the machining rate. It is demonstrated in this paper that the wheel–sample distance will directly influence the removal function contours. Moreover, ripples on the wheel surface will eventually induce the transverse prints on the removal function contours. The surface roughness of fused silicon is reduced to less than 0.5 nm (rms) from initial 1.267 nm (rms). The wheel polishing technique is feasible for super-smooth surface fabrication.

© 2012 Optical Society of America

OCIS Codes
(220.0220) Optical design and fabrication : Optical design and fabrication
(220.4610) Optical design and fabrication : Optical fabrication

ToC Category:
Optical Design and Fabrication

Original Manuscript: June 12, 2012
Revised Manuscript: August 21, 2012
Manuscript Accepted: August 22, 2012
Published: September 18, 2012

Linghua Zhang, Junlin Wang, and Jian Zhang, "Super-smooth surface fabrication technique and experimental research," Appl. Opt. 51, 6612-6617 (2012)

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