B. Herreros et al., GREEN UP-CONVERSION EMISSION IN ER3-DOPED LINBO3 ION-IMPLANTED PLANARWAVE-GUIDES(), Journal of luminescence, 72-4, 1997, pp. 198-200
In this work, the green up-conversion emission in LiNbO3:Er3+ ion-impl
anted planar waveguides under near IR pumping (750-1000 nm) was studie
d. Three excitation regions were observed, Two of them correspond to r
esonant two-photon processes, while the third one seems to be due to a
n avalanche process.