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Theses
Microcavités optiques élaborées par voie sol-gel : applications aux ions terre rare d'Eu3+ et aux nanocristaux semiconducteurs de CdSe
Abstract : Optical microcavities with Bragg reflectors have been fabricated by sol-gel process. Very short and high temperature annealing treatments are needed to form large stack of alternative layers without cracks. Structural studies shows the well defined interfaces and the good reproducibility of this method. Their application to study the light emission of Eu 3+ ions in the weak coupling, gives rise to a very narrow line of emission and a strong enhancement of the emitted intensity at the resonance. When these cavities are strongly doped with cadmium selenide (CdSe) nanocristals, the resonant peak is enlarged when his spectral position corresponds to their first absorption line. This means a strong interaction between the narrow peak of the cavity mode and the large first absorption line of the nanocrystals.
https://tel.archives-ouvertes.fr/tel-00003865
Contributor : Sebastien Rabaste <>
Submitted on : Sunday, November 30, 2003 - 10:58:58 AM
Last modification on : Thursday, October 15, 2020 - 9:00:03 AM
Long-term archiving on: : Friday, April 2, 2010 - 6:53:04 PM
Contributor : Sebastien Rabaste <>
Submitted on : Sunday, November 30, 2003 - 10:58:58 AM
Last modification on : Thursday, October 15, 2020 - 9:00:03 AM
Long-term archiving on: : Friday, April 2, 2010 - 6:53:04 PM