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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 2, Iss. 8 — Aug. 1, 2012
  • pp: 1111–1120

Enhanced absorption and emission of Y3Al5O12:Ce3+ thin layers prepared by epoxide-catalyzed sol-gel method

Shunsuke Murai, Marc A. Verschuuren, Gabriel Lozano, Giuseppe Pirruccio, A. Femius Koenderink, and Jaime Gómez Rivas  »View Author Affiliations

Optical Materials Express, Vol. 2, Issue 8, pp. 1111-1120 (2012)

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We have developed a method for fabricating thin layers of Ce3+ doped yttrium aluminium garnet, Y3Al5O12 (YAG:Ce) based on a sol-gel approach with propylene oxide as a gelation initiator. A single spin-coating process followed by a sequence of heat treatments allows the fabrication of polycrystalline YAG:Ce thin layers with a thickness of a few hundreds of nanometers. Surface morphology, crystallite size, and quantum efficiency are examined as a function of heat treatment temperature. The optical quality of the layer is further investigated by measuring the enhanced absorption of light coupled into the layer. We fabricate a three-layered slab waveguide system consisting of a fused silica glass substrate, a YAG:Ce layer and a SiO2 upper layer, and excite the system by illumination through a prism. The incident light couples to the fundamental waveguide mode in the YAG:Ce layer where it is eventually absorbed, resulting in an enhancement of absorption by a factor of 30. In correspondence, we observe a similar increase in emission intensity of photoluminescence caused by the enhanced absorption.

© 2012 OSA

OCIS Codes
(160.2540) Materials : Fluorescent and luminescent materials
(160.6060) Materials : Solgel
(310.1860) Thin films : Deposition and fabrication
(310.2790) Thin films : Guided waves

ToC Category:
Fluorescent and Luminescent Materials

Original Manuscript: April 5, 2012
Revised Manuscript: June 30, 2012
Manuscript Accepted: July 12, 2012
Published: July 23, 2012

Shunsuke Murai, Marc A. Verschuuren, Gabriel Lozano, Giuseppe Pirruccio, A. Femius Koenderink, and Jaime Gómez Rivas, "Enhanced absorption and emission of Y3Al5O12:Ce3+ thin layers prepared by epoxide-catalyzed sol-gel method," Opt. Mater. Express 2, 1111-1120 (2012)

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