Actas de congresos
Rare earth doped HfO2 nanoparticles embedded in SiO2-HfO2 planar waveguides. Preparation, optical, structural and spectroscopic characterization
Fecha
2003-01-01Registro en:
Proceedings of SPIE - The International Society for Optical Engineering, v. 3943, p. 10-18.
0277-786X
10.1117/12.384353
WOS:000087917400002
2-s2.0-0033682928
6446047463034654
2998503841917815
0000-0003-3286-9440
Autor
Universidade Estadual Paulista (Unesp)
Institución
Resumen
In this work we present results on the preparation of planar waveguides based on HfO2 and HfO2-SiO2. Stable sols containing europium and erbium doped HfO2 nanoparticles have been prepared and characterized. The nanosized sol was either deposited (spin-coating) on quartz substrates or embedded in (3-glycidoxipropil)trimethoxisilane (GPTS) used as a hybrid host for posterior deposition. The refractive index dispersion and luminescence characteristics were determined for the resulting HfO2 films. The optical parameters of the waveguides such as refractive index, thickness and propagation losses were measured for the hybrid composite. The planar waveguides present thickness of a few micra and support well confined propagating modes.