Abstract

In this work we report on the time and spatial resolved fluorescence of Neodymium ions in LiNbO3 channel waveguides fabricated by Reverse Proton Exchange. The analysis of the fluorescence decay curves obtained with a sub-micrometric resolution has evidenced the presence of a relevant fluorescence quenching inside the channel waveguide. From the comparison between diffusion simulations and the spatial dependence of the 4F3/2 fluorescence decay rate we have concluded that the observed fluorescence quenching can be unequivocally related to the presence of H+ ions in the LiNbO3 lattice. Nevertheless, it turns out that Reverse Proton Exchange guarantees a fluorescence quenching level significantly lower than in similar configurations based on Proton Exchange waveguides. This fluorescence quenching has been found to be accompanied by a relevant red-shift of the 4F3/24I9/2 fluorescence band.

© 2007 Optical Society of America

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  1. L. Arizmendi, "Photonic applications of Lithium Niobate," Phys. Status Solidi A 201, 253-283 (2004).
    [CrossRef]
  2. P. Baldi, M. De Micheli, K. El Hadi, A. C. Cino, P. Aschieri, and D. B. Ostrowsky, "Proton exchanged waveguides in LiNbO3 and LiTaO3 for integrated lasers and nonlinear frequency converters," Opt. Eng. 37, 1193-1202 (1998).
    [CrossRef]
  3. J. L. Jackel, C. E. Rice, and J. J. Veselka, "Proton exchange for high-index waveguides in LiNbO3," Appl. Phys. Lett. 41, 607-608 (1982).
    [CrossRef]
  4. E. Lallier, J. P. Pocholle, M. Papuchon, C. Grezes-Besset, E. Pelletier, M. De Micheli, M. J. Li, Q. He and D. B. Ostrowsky, "Laser oscillation of single-mode channel waveguide in Nd: MgO:LiNbO3," Electron. Lett. 25, 1491-1492 (1989).
    [CrossRef]
  5. J. L. Jackel, C. E. Rice, and J. J. Veselka, "Proton exchange for highindex waveguides in LiNbO3," Appl. Phys. Lett. 41, 607-608 (1982).
    [CrossRef]
  6. E. Lallier. "Lasers guides dóndes dans le Niobate de Lithium dope Neodyme," Universite de Paris-Sud, PhD Thesis (1992).
  7. J. L. Jackel, and J. J. Johnson, "Reverse exchange method for burying proton exchanged waveguides," Electron. Lett. 27, 1360-1361 (1991).
    [CrossRef]
  8. Y. N. Korkishko, V. A. Fedorov, T. M. Morozova, F. Caccavale, F. Gonella, and F. Segato, "Riverse proton exchange for buried waveguides in LiNbO3," J. Opt. Soc. Am. A 15, 1838-1842 (1998).
    [CrossRef]
  9. A. Di Lallo, C. Conti, A. Cino, and G. Assanto, "Efficient Frequency Doubling in Reverse Proton Exchanged Lithium Niobate waveguides," IEEE Photon. Technol. Lett. 13, 323-325, (2001).
    [CrossRef]
  10. J. Olivares and J. M. Cabrera. "Guided modes with ordinary refractive index in proton exchanged LiNbO3 waveguides," Appl. Phys. Lett. 62, 2468-2470 (1993).
    [CrossRef]
  11. K. R. Parameswaran, R. K. Route, J. R. Kurz, R. V. Roussev, M. M. Fejer and M. Fujimura. "Highly efficient second-harmonic generation in buried waveguides formed by annealed and reverse proton exchange in periodically poled lithium Niobate," Opt. Lett. 27, 179-181 (2002).
    [CrossRef]
  12. M. Domenech, G. Lifante and F. Cussó, A. Parisi, A. C. Cino and S. Riva Sanseverino, "Fabrication and characterisation of reverse proton exchange optical waveguides in Neodymium doped lithium niobate crystals," Mater. Sci. Forum 480-481, 429-436 (2005).
  13. G. Lifante, E. Cantelar, F. Cussó, M. Domenech, A. C. Busacca, A. C. Cino and S. Riva Sanseverino "Imaginary distance BPM as an efficient tool for modelling optical waveguides fabrication by ion diffusion," Proc. OWTNM’06, Varese, Italy (2006).
  14. C. Jacinto, S. L. Oliveira, L. A. O. Nunes, T. Catunda, and M. J. V. Bell. "Thermal lens study of the OH-influence on the fluorescence efficiency of Yb3+-doped phosphate glasses," Appl. Phys. Lett. 86, 071911 (2005).
    [CrossRef]
  15. U. R. Rodríguez Mendoza, A. Ródenas, D. Jaque, I. R. Martín, F. Lahoz and V. Lavín "High pressure luminescence in Nd doped LiNbO3 crystals," High Press. Res. 26, 341-343 (2006).
    [CrossRef]
  16. D. Jaque, E. Cantelar and G. Lifante "Lattice micro-modifications induced by Zn difussion in Nd:LiNbO3 channel waveguides probed by Nd3+ confocal luminescence," Appl. Phys. B. DOI: 10.1007/s00340-007-2692-9 (2007).
  17. B. V. Dierold and C. Sandmann. "Inspection of periodically poled waveguide devices by confocal luminescence microscopy," Appl. Phys. B. 78, 363-366 (2004).
    [CrossRef]

2006

U. R. Rodríguez Mendoza, A. Ródenas, D. Jaque, I. R. Martín, F. Lahoz and V. Lavín "High pressure luminescence in Nd doped LiNbO3 crystals," High Press. Res. 26, 341-343 (2006).
[CrossRef]

2005

M. Domenech, G. Lifante and F. Cussó, A. Parisi, A. C. Cino and S. Riva Sanseverino, "Fabrication and characterisation of reverse proton exchange optical waveguides in Neodymium doped lithium niobate crystals," Mater. Sci. Forum 480-481, 429-436 (2005).

C. Jacinto, S. L. Oliveira, L. A. O. Nunes, T. Catunda, and M. J. V. Bell. "Thermal lens study of the OH-influence on the fluorescence efficiency of Yb3+-doped phosphate glasses," Appl. Phys. Lett. 86, 071911 (2005).
[CrossRef]

2004

B. V. Dierold and C. Sandmann. "Inspection of periodically poled waveguide devices by confocal luminescence microscopy," Appl. Phys. B. 78, 363-366 (2004).
[CrossRef]

L. Arizmendi, "Photonic applications of Lithium Niobate," Phys. Status Solidi A 201, 253-283 (2004).
[CrossRef]

2002

2001

A. Di Lallo, C. Conti, A. Cino, and G. Assanto, "Efficient Frequency Doubling in Reverse Proton Exchanged Lithium Niobate waveguides," IEEE Photon. Technol. Lett. 13, 323-325, (2001).
[CrossRef]

1998

P. Baldi, M. De Micheli, K. El Hadi, A. C. Cino, P. Aschieri, and D. B. Ostrowsky, "Proton exchanged waveguides in LiNbO3 and LiTaO3 for integrated lasers and nonlinear frequency converters," Opt. Eng. 37, 1193-1202 (1998).
[CrossRef]

Y. N. Korkishko, V. A. Fedorov, T. M. Morozova, F. Caccavale, F. Gonella, and F. Segato, "Riverse proton exchange for buried waveguides in LiNbO3," J. Opt. Soc. Am. A 15, 1838-1842 (1998).
[CrossRef]

1993

J. Olivares and J. M. Cabrera. "Guided modes with ordinary refractive index in proton exchanged LiNbO3 waveguides," Appl. Phys. Lett. 62, 2468-2470 (1993).
[CrossRef]

1991

J. L. Jackel, and J. J. Johnson, "Reverse exchange method for burying proton exchanged waveguides," Electron. Lett. 27, 1360-1361 (1991).
[CrossRef]

1989

E. Lallier, J. P. Pocholle, M. Papuchon, C. Grezes-Besset, E. Pelletier, M. De Micheli, M. J. Li, Q. He and D. B. Ostrowsky, "Laser oscillation of single-mode channel waveguide in Nd: MgO:LiNbO3," Electron. Lett. 25, 1491-1492 (1989).
[CrossRef]

1982

J. L. Jackel, C. E. Rice, and J. J. Veselka, "Proton exchange for highindex waveguides in LiNbO3," Appl. Phys. Lett. 41, 607-608 (1982).
[CrossRef]

J. L. Jackel, C. E. Rice, and J. J. Veselka, "Proton exchange for high-index waveguides in LiNbO3," Appl. Phys. Lett. 41, 607-608 (1982).
[CrossRef]

Arizmendi, L.

L. Arizmendi, "Photonic applications of Lithium Niobate," Phys. Status Solidi A 201, 253-283 (2004).
[CrossRef]

Aschieri, P.

P. Baldi, M. De Micheli, K. El Hadi, A. C. Cino, P. Aschieri, and D. B. Ostrowsky, "Proton exchanged waveguides in LiNbO3 and LiTaO3 for integrated lasers and nonlinear frequency converters," Opt. Eng. 37, 1193-1202 (1998).
[CrossRef]

Assanto, G.

A. Di Lallo, C. Conti, A. Cino, and G. Assanto, "Efficient Frequency Doubling in Reverse Proton Exchanged Lithium Niobate waveguides," IEEE Photon. Technol. Lett. 13, 323-325, (2001).
[CrossRef]

Baldi, P.

P. Baldi, M. De Micheli, K. El Hadi, A. C. Cino, P. Aschieri, and D. B. Ostrowsky, "Proton exchanged waveguides in LiNbO3 and LiTaO3 for integrated lasers and nonlinear frequency converters," Opt. Eng. 37, 1193-1202 (1998).
[CrossRef]

Bell, M. J. V.

C. Jacinto, S. L. Oliveira, L. A. O. Nunes, T. Catunda, and M. J. V. Bell. "Thermal lens study of the OH-influence on the fluorescence efficiency of Yb3+-doped phosphate glasses," Appl. Phys. Lett. 86, 071911 (2005).
[CrossRef]

Cabrera, J. M.

J. Olivares and J. M. Cabrera. "Guided modes with ordinary refractive index in proton exchanged LiNbO3 waveguides," Appl. Phys. Lett. 62, 2468-2470 (1993).
[CrossRef]

Caccavale, F.

Catunda, T.

C. Jacinto, S. L. Oliveira, L. A. O. Nunes, T. Catunda, and M. J. V. Bell. "Thermal lens study of the OH-influence on the fluorescence efficiency of Yb3+-doped phosphate glasses," Appl. Phys. Lett. 86, 071911 (2005).
[CrossRef]

Cino, A.

A. Di Lallo, C. Conti, A. Cino, and G. Assanto, "Efficient Frequency Doubling in Reverse Proton Exchanged Lithium Niobate waveguides," IEEE Photon. Technol. Lett. 13, 323-325, (2001).
[CrossRef]

Cino, A. C.

M. Domenech, G. Lifante and F. Cussó, A. Parisi, A. C. Cino and S. Riva Sanseverino, "Fabrication and characterisation of reverse proton exchange optical waveguides in Neodymium doped lithium niobate crystals," Mater. Sci. Forum 480-481, 429-436 (2005).

P. Baldi, M. De Micheli, K. El Hadi, A. C. Cino, P. Aschieri, and D. B. Ostrowsky, "Proton exchanged waveguides in LiNbO3 and LiTaO3 for integrated lasers and nonlinear frequency converters," Opt. Eng. 37, 1193-1202 (1998).
[CrossRef]

Conti, C.

A. Di Lallo, C. Conti, A. Cino, and G. Assanto, "Efficient Frequency Doubling in Reverse Proton Exchanged Lithium Niobate waveguides," IEEE Photon. Technol. Lett. 13, 323-325, (2001).
[CrossRef]

Cussó, F.

M. Domenech, G. Lifante and F. Cussó, A. Parisi, A. C. Cino and S. Riva Sanseverino, "Fabrication and characterisation of reverse proton exchange optical waveguides in Neodymium doped lithium niobate crystals," Mater. Sci. Forum 480-481, 429-436 (2005).

De Micheli, M.

P. Baldi, M. De Micheli, K. El Hadi, A. C. Cino, P. Aschieri, and D. B. Ostrowsky, "Proton exchanged waveguides in LiNbO3 and LiTaO3 for integrated lasers and nonlinear frequency converters," Opt. Eng. 37, 1193-1202 (1998).
[CrossRef]

E. Lallier, J. P. Pocholle, M. Papuchon, C. Grezes-Besset, E. Pelletier, M. De Micheli, M. J. Li, Q. He and D. B. Ostrowsky, "Laser oscillation of single-mode channel waveguide in Nd: MgO:LiNbO3," Electron. Lett. 25, 1491-1492 (1989).
[CrossRef]

Di Lallo, A.

A. Di Lallo, C. Conti, A. Cino, and G. Assanto, "Efficient Frequency Doubling in Reverse Proton Exchanged Lithium Niobate waveguides," IEEE Photon. Technol. Lett. 13, 323-325, (2001).
[CrossRef]

Dierold, B. V.

B. V. Dierold and C. Sandmann. "Inspection of periodically poled waveguide devices by confocal luminescence microscopy," Appl. Phys. B. 78, 363-366 (2004).
[CrossRef]

Domenech, M.

M. Domenech, G. Lifante and F. Cussó, A. Parisi, A. C. Cino and S. Riva Sanseverino, "Fabrication and characterisation of reverse proton exchange optical waveguides in Neodymium doped lithium niobate crystals," Mater. Sci. Forum 480-481, 429-436 (2005).

El Hadi, K.

P. Baldi, M. De Micheli, K. El Hadi, A. C. Cino, P. Aschieri, and D. B. Ostrowsky, "Proton exchanged waveguides in LiNbO3 and LiTaO3 for integrated lasers and nonlinear frequency converters," Opt. Eng. 37, 1193-1202 (1998).
[CrossRef]

Fedorov, V. A.

Fejer, M. M.

Fujimura, M.

Gonella, F.

Grezes-Besset, C.

E. Lallier, J. P. Pocholle, M. Papuchon, C. Grezes-Besset, E. Pelletier, M. De Micheli, M. J. Li, Q. He and D. B. Ostrowsky, "Laser oscillation of single-mode channel waveguide in Nd: MgO:LiNbO3," Electron. Lett. 25, 1491-1492 (1989).
[CrossRef]

He, Q.

E. Lallier, J. P. Pocholle, M. Papuchon, C. Grezes-Besset, E. Pelletier, M. De Micheli, M. J. Li, Q. He and D. B. Ostrowsky, "Laser oscillation of single-mode channel waveguide in Nd: MgO:LiNbO3," Electron. Lett. 25, 1491-1492 (1989).
[CrossRef]

Jacinto, C.

C. Jacinto, S. L. Oliveira, L. A. O. Nunes, T. Catunda, and M. J. V. Bell. "Thermal lens study of the OH-influence on the fluorescence efficiency of Yb3+-doped phosphate glasses," Appl. Phys. Lett. 86, 071911 (2005).
[CrossRef]

Jackel, J. L.

J. L. Jackel, and J. J. Johnson, "Reverse exchange method for burying proton exchanged waveguides," Electron. Lett. 27, 1360-1361 (1991).
[CrossRef]

J. L. Jackel, C. E. Rice, and J. J. Veselka, "Proton exchange for highindex waveguides in LiNbO3," Appl. Phys. Lett. 41, 607-608 (1982).
[CrossRef]

J. L. Jackel, C. E. Rice, and J. J. Veselka, "Proton exchange for high-index waveguides in LiNbO3," Appl. Phys. Lett. 41, 607-608 (1982).
[CrossRef]

Jaque, D.

U. R. Rodríguez Mendoza, A. Ródenas, D. Jaque, I. R. Martín, F. Lahoz and V. Lavín "High pressure luminescence in Nd doped LiNbO3 crystals," High Press. Res. 26, 341-343 (2006).
[CrossRef]

Johnson, J. J.

J. L. Jackel, and J. J. Johnson, "Reverse exchange method for burying proton exchanged waveguides," Electron. Lett. 27, 1360-1361 (1991).
[CrossRef]

Korkishko, Y. N.

Kurz, J. R.

Lahoz, F.

U. R. Rodríguez Mendoza, A. Ródenas, D. Jaque, I. R. Martín, F. Lahoz and V. Lavín "High pressure luminescence in Nd doped LiNbO3 crystals," High Press. Res. 26, 341-343 (2006).
[CrossRef]

Lallier, E.

E. Lallier, J. P. Pocholle, M. Papuchon, C. Grezes-Besset, E. Pelletier, M. De Micheli, M. J. Li, Q. He and D. B. Ostrowsky, "Laser oscillation of single-mode channel waveguide in Nd: MgO:LiNbO3," Electron. Lett. 25, 1491-1492 (1989).
[CrossRef]

Lavín, V.

U. R. Rodríguez Mendoza, A. Ródenas, D. Jaque, I. R. Martín, F. Lahoz and V. Lavín "High pressure luminescence in Nd doped LiNbO3 crystals," High Press. Res. 26, 341-343 (2006).
[CrossRef]

Li, M. J.

E. Lallier, J. P. Pocholle, M. Papuchon, C. Grezes-Besset, E. Pelletier, M. De Micheli, M. J. Li, Q. He and D. B. Ostrowsky, "Laser oscillation of single-mode channel waveguide in Nd: MgO:LiNbO3," Electron. Lett. 25, 1491-1492 (1989).
[CrossRef]

Lifante, G.

M. Domenech, G. Lifante and F. Cussó, A. Parisi, A. C. Cino and S. Riva Sanseverino, "Fabrication and characterisation of reverse proton exchange optical waveguides in Neodymium doped lithium niobate crystals," Mater. Sci. Forum 480-481, 429-436 (2005).

Martín, I. R.

U. R. Rodríguez Mendoza, A. Ródenas, D. Jaque, I. R. Martín, F. Lahoz and V. Lavín "High pressure luminescence in Nd doped LiNbO3 crystals," High Press. Res. 26, 341-343 (2006).
[CrossRef]

Morozova, T. M.

Nunes, L. A. O.

C. Jacinto, S. L. Oliveira, L. A. O. Nunes, T. Catunda, and M. J. V. Bell. "Thermal lens study of the OH-influence on the fluorescence efficiency of Yb3+-doped phosphate glasses," Appl. Phys. Lett. 86, 071911 (2005).
[CrossRef]

Olivares, J.

J. Olivares and J. M. Cabrera. "Guided modes with ordinary refractive index in proton exchanged LiNbO3 waveguides," Appl. Phys. Lett. 62, 2468-2470 (1993).
[CrossRef]

Oliveira, S. L.

C. Jacinto, S. L. Oliveira, L. A. O. Nunes, T. Catunda, and M. J. V. Bell. "Thermal lens study of the OH-influence on the fluorescence efficiency of Yb3+-doped phosphate glasses," Appl. Phys. Lett. 86, 071911 (2005).
[CrossRef]

Ostrowsky, D. B.

P. Baldi, M. De Micheli, K. El Hadi, A. C. Cino, P. Aschieri, and D. B. Ostrowsky, "Proton exchanged waveguides in LiNbO3 and LiTaO3 for integrated lasers and nonlinear frequency converters," Opt. Eng. 37, 1193-1202 (1998).
[CrossRef]

E. Lallier, J. P. Pocholle, M. Papuchon, C. Grezes-Besset, E. Pelletier, M. De Micheli, M. J. Li, Q. He and D. B. Ostrowsky, "Laser oscillation of single-mode channel waveguide in Nd: MgO:LiNbO3," Electron. Lett. 25, 1491-1492 (1989).
[CrossRef]

Papuchon, M.

E. Lallier, J. P. Pocholle, M. Papuchon, C. Grezes-Besset, E. Pelletier, M. De Micheli, M. J. Li, Q. He and D. B. Ostrowsky, "Laser oscillation of single-mode channel waveguide in Nd: MgO:LiNbO3," Electron. Lett. 25, 1491-1492 (1989).
[CrossRef]

Parameswaran, K. R.

Parisi, A.

M. Domenech, G. Lifante and F. Cussó, A. Parisi, A. C. Cino and S. Riva Sanseverino, "Fabrication and characterisation of reverse proton exchange optical waveguides in Neodymium doped lithium niobate crystals," Mater. Sci. Forum 480-481, 429-436 (2005).

Pelletier, E.

E. Lallier, J. P. Pocholle, M. Papuchon, C. Grezes-Besset, E. Pelletier, M. De Micheli, M. J. Li, Q. He and D. B. Ostrowsky, "Laser oscillation of single-mode channel waveguide in Nd: MgO:LiNbO3," Electron. Lett. 25, 1491-1492 (1989).
[CrossRef]

Pocholle, J. P.

E. Lallier, J. P. Pocholle, M. Papuchon, C. Grezes-Besset, E. Pelletier, M. De Micheli, M. J. Li, Q. He and D. B. Ostrowsky, "Laser oscillation of single-mode channel waveguide in Nd: MgO:LiNbO3," Electron. Lett. 25, 1491-1492 (1989).
[CrossRef]

Rice, C. E.

J. L. Jackel, C. E. Rice, and J. J. Veselka, "Proton exchange for highindex waveguides in LiNbO3," Appl. Phys. Lett. 41, 607-608 (1982).
[CrossRef]

J. L. Jackel, C. E. Rice, and J. J. Veselka, "Proton exchange for high-index waveguides in LiNbO3," Appl. Phys. Lett. 41, 607-608 (1982).
[CrossRef]

Riva Sanseverino, S.

M. Domenech, G. Lifante and F. Cussó, A. Parisi, A. C. Cino and S. Riva Sanseverino, "Fabrication and characterisation of reverse proton exchange optical waveguides in Neodymium doped lithium niobate crystals," Mater. Sci. Forum 480-481, 429-436 (2005).

Ródenas, A.

U. R. Rodríguez Mendoza, A. Ródenas, D. Jaque, I. R. Martín, F. Lahoz and V. Lavín "High pressure luminescence in Nd doped LiNbO3 crystals," High Press. Res. 26, 341-343 (2006).
[CrossRef]

Rodríguez Mendoza, U. R.

U. R. Rodríguez Mendoza, A. Ródenas, D. Jaque, I. R. Martín, F. Lahoz and V. Lavín "High pressure luminescence in Nd doped LiNbO3 crystals," High Press. Res. 26, 341-343 (2006).
[CrossRef]

Roussev, R. V.

Route, R. K.

Sandmann, C.

B. V. Dierold and C. Sandmann. "Inspection of periodically poled waveguide devices by confocal luminescence microscopy," Appl. Phys. B. 78, 363-366 (2004).
[CrossRef]

Segato, F.

Veselka, J. J.

J. L. Jackel, C. E. Rice, and J. J. Veselka, "Proton exchange for highindex waveguides in LiNbO3," Appl. Phys. Lett. 41, 607-608 (1982).
[CrossRef]

J. L. Jackel, C. E. Rice, and J. J. Veselka, "Proton exchange for high-index waveguides in LiNbO3," Appl. Phys. Lett. 41, 607-608 (1982).
[CrossRef]

Appl. Phys. B.

B. V. Dierold and C. Sandmann. "Inspection of periodically poled waveguide devices by confocal luminescence microscopy," Appl. Phys. B. 78, 363-366 (2004).
[CrossRef]

Appl. Phys. Lett.

C. Jacinto, S. L. Oliveira, L. A. O. Nunes, T. Catunda, and M. J. V. Bell. "Thermal lens study of the OH-influence on the fluorescence efficiency of Yb3+-doped phosphate glasses," Appl. Phys. Lett. 86, 071911 (2005).
[CrossRef]

J. Olivares and J. M. Cabrera. "Guided modes with ordinary refractive index in proton exchanged LiNbO3 waveguides," Appl. Phys. Lett. 62, 2468-2470 (1993).
[CrossRef]

J. L. Jackel, C. E. Rice, and J. J. Veselka, "Proton exchange for high-index waveguides in LiNbO3," Appl. Phys. Lett. 41, 607-608 (1982).
[CrossRef]

J. L. Jackel, C. E. Rice, and J. J. Veselka, "Proton exchange for highindex waveguides in LiNbO3," Appl. Phys. Lett. 41, 607-608 (1982).
[CrossRef]

Electron. Lett.

J. L. Jackel, and J. J. Johnson, "Reverse exchange method for burying proton exchanged waveguides," Electron. Lett. 27, 1360-1361 (1991).
[CrossRef]

E. Lallier, J. P. Pocholle, M. Papuchon, C. Grezes-Besset, E. Pelletier, M. De Micheli, M. J. Li, Q. He and D. B. Ostrowsky, "Laser oscillation of single-mode channel waveguide in Nd: MgO:LiNbO3," Electron. Lett. 25, 1491-1492 (1989).
[CrossRef]

High Press. Res.

U. R. Rodríguez Mendoza, A. Ródenas, D. Jaque, I. R. Martín, F. Lahoz and V. Lavín "High pressure luminescence in Nd doped LiNbO3 crystals," High Press. Res. 26, 341-343 (2006).
[CrossRef]

IEEE Photon. Technol. Lett.

A. Di Lallo, C. Conti, A. Cino, and G. Assanto, "Efficient Frequency Doubling in Reverse Proton Exchanged Lithium Niobate waveguides," IEEE Photon. Technol. Lett. 13, 323-325, (2001).
[CrossRef]

J. Opt. Soc. Am. A

Mater. Sci. Forum

M. Domenech, G. Lifante and F. Cussó, A. Parisi, A. C. Cino and S. Riva Sanseverino, "Fabrication and characterisation of reverse proton exchange optical waveguides in Neodymium doped lithium niobate crystals," Mater. Sci. Forum 480-481, 429-436 (2005).

Opt. Eng.

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[CrossRef]

Opt. Lett.

Phys. Status Solidi A

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[CrossRef]

Other

G. Lifante, E. Cantelar, F. Cussó, M. Domenech, A. C. Busacca, A. C. Cino and S. Riva Sanseverino "Imaginary distance BPM as an efficient tool for modelling optical waveguides fabrication by ion diffusion," Proc. OWTNM’06, Varese, Italy (2006).

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D. Jaque, E. Cantelar and G. Lifante "Lattice micro-modifications induced by Zn difussion in Nd:LiNbO3 channel waveguides probed by Nd3+ confocal luminescence," Appl. Phys. B. DOI: 10.1007/s00340-007-2692-9 (2007).

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Figures (5)

Fig. 1.
Fig. 1.

(a).- Nd:LiNbO3 sample with silica mask channel opening. Reference axis used in this work are indicated. (b).- Two dimensional calculation of the proton density in the waveguide as obtained by using the imaginary distance beam propagation method

Fig. 2.
Fig. 2.

- Fluorescence decay curve of the 4F3/2 metastable state of Nd3+ ions in the LiNbO3 bulk and RPE channel waveguide (red and blue points, respectively). Solid lines correspond to a single exponential fit. The spatial location at which each curve was measured is indicated in the graph on the left.

Fig. 3.
Fig. 3.

- 4F3/2 lifetime as a function of both y and x positions ((a) and (b), respectively). Green line corresponds to the proton density along the y and x scan directions.

Fig. 4.
Fig. 4.

(a).- 4F3/24I9/2 micro fluorescence spectrum obtained under continuous wave excitation. (b).- 4F3/24I9/2 emitted intensity as a function of the y position.

Fig. 5.
Fig. 5.

- Energy position of the main luminescence peak within the 4F3/24I9/2 fluorescence band as a function of the y position (red points). Green line is the proton density as obtained from the 2D calculations included in Fig. 1(b).

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