Time resolved confocal luminescence investigations on Reverse Proton Exchange Nd:LiNbO3 channel waveguides

Alfonso Carmelo Cino, Stefano Riva Sanseverino, Alessandro Busacca, S. Riva Sanseverino, Eugenio Cantelar, Fernando Cussó, Alfonso C. Cino, S. Riva Sanseverino, Ginés Lifante, Jaque, E. Martín Rodríguez

Risultato della ricerca: Articlepeer review

26 Citazioni (Scopus)

Abstract

In this work we report on the time and spatial resolved fluorescence of Neodymium ions in LiNbO3 channel waveguides fabricated by Reverse Proton Exchange. The analysis of the fluorescence decay curves obtained with a sub-micrometric resolution has evidenced the presence of a relevant fluorescence quenching inside the channel waveguide. From thecomparison between diffusion simulations and the spatial dependence of the 4F3/2 fluorescence decay rate we have concluded that the observedfluorescence quenching can be unequivocally related to the presence of H+ ions in the LiNbO3 lattice. Nevertheless, it turns out that Reverse Proton Exchange guarantees a fluorescence quenching level significantly lower than in similar configurations based on Proton Exchange waveguides. This fluorescence quenching has been found to be accompanied by a relevant red-shift of the 4F3/2 -> 4I9/2 fluorescence band
Lingua originaleEnglish
pagine (da-a)8805-8811
Numero di pagine7
RivistaOptics Express
Volume15
Stato di pubblicazionePublished - 2007

All Science Journal Classification (ASJC) codes

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