Erbium-Activated Silica-Titania Planar Waveguides
Source abstract
Abstract
(100 -x)SiO2-(x)TiO2-ErO3/2 planar waveguides, with 7 =x =20 have been prepared by sol-gel route using the dip-coating technique. The thickness of the films was optimized to support a single propagating mode at 1550 nm, with a confinement coefficient higher than 0.75. The process of densification of the gel and the devitrification with the growth of TiO2 nanocrystals were studied by Raman scattering. Devitrification is important only for x ³15, but it was not possible to obtain full densification of the samples, even at the lowest TiO2 content, without the appearance of nanocrystals. Emission in the C telecom band was observed; the spectral width of the 4I13/2 ® 4I15/2 transition of Er3+slightly increases with the titania content. For x £12 most of Er3+ions (about 65%) decay exponentially with a lifetime of about 8 ms.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Glass properties and applications · Luminescence Properties of Advanced Materials · Photorefractive and Nonlinear Optics
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References (12)
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1. C. Strohhófer, J. Fick, H.C. Vasconcelos, and R.M. Almeida, J. Non-Cryst. Solids 226, 182 (1998).10.1016/S0022-3093(98)00365-2 ↗
2. X. Orignac, D. Barbier, X.M. Du, R.M. Almeida, O. McCarty, and E. Yeatman, Opt. Mater. 12, 1 (1999).10.1016/S0925-3467(98)00076-7 ↗
3. E.M. Yeatman, M.M. Ahmad, O. McCarthy, A. Vannucci, P. Gastaldo, D. Barbier, D. Mongardien, and C. Moronvalle, Opt. Commun. 164, 19 (1999).10.1016/S0030-4018(99)00171-6 ↗
4. E.M. Yeatman, M.M. Ahmad, O. McCarthy, A. Martucci, and M. Guglielmi, J. Sol-Gel Sci. Tech. 19, 231 (2000).10.1023/A:1008792423076 ↗
5. M.A. Forastiere, S. Pelli, G.C. Righini, M. Guglielmi, M.M. Ahmad, O. McCarthy, E. Yeatman, and A. Vannucci, Fiber and Int. Opt. 20, 29 (2001).10.1080/01468030151072976 ↗
6. S. Ronchin, A. Chiasera, M. Montagna, R. Rolli, C. Tosello, S. Pelli, G.C. Righini, R.R. Gonçalves, S.J.L. Ribeiro, C. De Bernardi, F. Pozzi, C. Duverger, R. Belli, and M. Ferrari, SPIE 4282, 31 (2001).
7. C. Duverger, M. Montagna, R. Rolli, S. Ronchin, L. Zampedri, M. Fossi, S. Pelli, G.C. Righini, A. Monteil, C. Armellini, and M. Ferrari, J. Non-Cryst. Solids 280, 261 (2001).10.1016/S0022-3093(00)00383-5 ↗
8. M.F. Best and R.A. Condrate Sr., J. Mat. Science Letters 4, 994 (1985).10.1007/BF00721102 ↗
9. M.P. Moret, R. Zallen, D.P. Vijay, and S.B. Desu, Thin Solid Films 366, 8 (2000).10.1016/S0040-6090(00)00862-2 ↗
10. M. Montagna, E. Moser, F. Visintainer, L. Zampedri, M. Ferrari, A. Martucci, M. Guglielmi, and M. Ivanda, J. Sol-Gel Sci. Tech. 26(1-3), 241 (2003).10.1023/A:1020755200573 ↗
11. R. Ceccato, R. dal Maschio, S. Gialanella, G. Mariotto, M. Montagna, F. Rossi, M. Ferrari, K.E. Lipinska-Kalita, and Y. Ohki, J. App. Phys. 90, 2522 (2001).10.1063/1.1365426 ↗
12. M.P. Hehlen, N.J. Cockroft, T.R. Gosnell, and A.J. Bruce, Phys. Rev. B 56, 9302 (1997).10.1103/PhysRevB.56.9302 ↗