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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 4 — Feb. 1, 2002
  • pp: 678–684

Refractive-index changes caused by proton radiation in silicate optical glasses

Andrei I. Gusarov, Dominic Doyle, Alex Hermanne, Francis Berghmans, Michel Fruit, Gerd Ulbrich, and Michel Blondel  »View Author Affiliations


Applied Optics, Vol. 41, Issue 4, pp. 678-684 (2002)
http://dx.doi.org/10.1364/AO.41.000678


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Abstract

We have studied experimentally, by using a differential interferometric technique, the effect of proton radiation on the refractive index of commercial (Schott) silicate crown glasses, BK7 and LaK9, and their radiation-resistant counterparts. The strongest effect was observed for the radiation-hard lanthanum crown LaK9G15: At a 0.65-Mrad dose the index change was approximately 3 × 10-5. Radiation-hard glasses are used in optical systems operating in radiation environments because they prevent spectral transmission degradation in the visible. However, such glasses are not protected against radiation-induced refractive-index perturbations, and a diffraction-limited optical system based on such glasses may fail owing to radiation-induced aberrations.

© 2002 Optical Society of America

OCIS Codes
(160.2750) Materials : Glass and other amorphous materials
(350.5610) Other areas of optics : Radiation
(350.6090) Other areas of optics : Space optics

History
Original Manuscript: March 23, 2001
Revised Manuscript: September 6, 2001
Published: February 1, 2002

Citation
Andrei I. Gusarov, Dominic Doyle, Alex Hermanne, Francis Berghmans, Michel Fruit, Gerd Ulbrich, and Michel Blondel, "Refractive-index changes caused by proton radiation in silicate optical glasses," Appl. Opt. 41, 678-684 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-4-678

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