Eu[sup 3+]-doped microcavities fabricated by sol–gel process

Bellessa, J.; Rabaste, S.; Plenet, J. C.; Dumas, J.; Mugnier, J.; Marty, O.
October 2001
Applied Physics Letters;10/1/2001, Vol. 79 Issue 14, p2142
Academic Journal
The fabrication of microcavities by a sol–gel process and their optical properties are described. The cavities are constituted of an Eu[sup 3+]-doped SiO[sub 2] active layer inserted between two Bragg mirrors, fabricated by stacking alternatiely undoped TiO[sub 2] and SiO[sub 2] sol–gel thin films. Eu[sup 3+] luminescence modification due to the cavity effect, intensity enhancement and modification of the line shape has been observed, and shows a cavity quality factor of 1200. The reflectivity factor of the associated Bragg mirrors reaches 99.8% for seven alternate SiO[sub 2]/TiO[sub 2] layers. © 2001 American Institute of Physics.


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