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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 23, Iss. 9 — May. 1, 1984
  • pp: 1418–1424

Wide spectrum antireflective coating for fused silica and other glasses

Bulent E. Yoldas and Deborah P. Partlow  »View Author Affiliations


Applied Optics, Vol. 23, Issue 9, pp. 1418-1424 (1984)
http://dx.doi.org/10.1364/AO.23.001418


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Abstract

A method of forming a laser damage resistant wide-spectrum antireflective coating on fused silica and other glasses has been developed. The single-layer graded-index coating is deposited from a specific polymer solution which is converted to a porous SiO2 film. The size of the pores in the film is first reduced by heat treatment to prevent eventual UV scattering. Refractive-index gradation is achieved by grading this non-scattering porosity using a mild etching agent to a depth which is sufficient to smooth the density transition from air to the substrate glass. The resultant coating provides antireflectivity over the entire transmission range of silica extending to wavelengths as short as 250 nm. Laser damage thresholds as high as 9 J/cm2 at 350 nm have been demonstrated for this coating on fused silica substrates, which makes it particularly suitable for the optics of high-power lasers.

© 1984 Optical Society of America

History
Original Manuscript: January 17, 1984
Published: May 1, 1984

Citation
Bulent E. Yoldas and Deborah P. Partlow, "Wide spectrum antireflective coating for fused silica and other glasses," Appl. Opt. 23, 1418-1424 (1984)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-23-9-1418

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