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Spectroscopic assessment of rare-earth activated planar waveguides and microcavities

2005; Elsevier BV; Volume: 248; Issue: 1-4 Linguagem: Inglês

10.1016/j.apsusc.2005.03.022

1873-5584

L. Zampedri, C. Tosello, Hervé Portalès, M. Montagna, M. Mattarelli, Andrea Chiappini, Giancarlo C. Righini, S. Pelli, Gualtiero Nunzi Conti, M. Martino, Sabine Portal, Ana C. Marques, Rui M. Almeida, Y. Jestin, Maurizio Ferrari, Alessandro Chiasera,

Photorefractive and Nonlinear Optics

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–xHfO2–yErO1.5 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 4I13/2 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).