Synthesis and characterization of erbium-doped SiO2-TiO2 thin films prepared by sol-gel and dip-coating techniques onto commercial glass substrates as a route for obtaining active GRadient-INdex materials

1. Gómez-Varela, A.I.
2. Castro, Y.
3. Durán, A.
4. De Beule, P.A.A.
5. Flores-Arias, M.T.
6. Bao-Varela, C.