Spectroscopic assessment of rare-earth activated planar waveguides and microcavities

Zampedri L; Tosello C; Portales H; Montagna M; Mattarelli M; Chiappini A; Righini GC; Pelli S; Conti GN; Martino M; Portal S; Marques AC; Almeida RM; Jestin Y; Ferrari M; Chiasera A

Applied Surface Science, Vol.248, No.1-4, 3-7, 2005

DOI10.1016/j.apsusc.2005.03.022 Export Citation

Spectroscopic assessment of rare-earth activated planar waveguides and microcavities

Zampedri L, Tosello C, Portales H, Montagna M, Mattarelli M, Chiappini A, Righini GC, Pelli S, Conti GN, Martino M, Portal S, Marques AC, Almeida RM, Jestin Y, Ferrari M, Chiasera A

This paper deals with glass-based photonic structures, used to control and modify the optical and spectroscopic properties of rare earth ions. The spectroscopic assessment of sol-gel-derived planar waveguides and 1D photonic band gap structures is reported. The spectroscopic, optical, and structural properties of planar waveguides with (100-x)SiO2-xHfO(2)-yErO(1.5) with y = 0.3, 0.01; and x = 10, 20, 30, 40 have been investigated by photoluminescence and Raman spectroscopy. The radiative quantum efficiency of the I-4(13/2) metastable state of Er3+ ions is between 84 and 88% depending on the Si/Hf molar ratio. The sol-gel-derived one-dimensional cavity was realized by a EU3+-activated dielectric layer placed between distributed Bragg reflectors (DBRs). (c) 2005 Elsevier B.V. All rights reserved.

Keywords:sol-gel method;planar waveguides;microcavitics;Bragg reflectors;luminescence