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The modification induced by UV radiation in spherical microlenses made of glassy arsenic sulphide

M. RUSU1,* , A. VELEA2, M. POPESCU2

Affiliation

  1. National Institute R&D of Optoelectronics, Atomistilor str. P.O.Box Mg. 5, Magurele- Bucharest, Romania
  2. National Institute R&D of Materials Physics, 077125 Bucharest- Magurele, P. O. Box MG. 7, Atomistilor str. 105 bis, Romania

Abstract

Spherical arsenic chalcogenide glass microlenses have been attached to optical fibers. The assembly was subjected to UVradiation for different time intervals in different conditions of temperature. As a consequence, the focusing of the beam changes due to the modification of the refractive index, and of the structure, induced by photo-melting followed by crystallization. In the same time for high irradiation times the habitus of the lens changes into a prismatic one due probably to photomelting of the glass accompanied by a crystallization process..

Keywords

Arsenic sulphide; Glass; Chalcogenide; UV light; Microlenses; Photo-crystallization.

Submitted at: Nov. 15, 2008
Accepted at: Dec. 10, 2008

Citation

M. RUSU, A. VELEA, M. POPESCU, The modification induced by UV radiation in spherical microlenses made of glassy arsenic sulphide, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 12, pp. 3169-3171 (2008)