Emission and absorption cross sections of photorefractive-damage-resistant locally Er-Mg-doped near-stoichiometric Ti:Mg:Er : LiNbO3 strip waveguides

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Article number5730179
Pages (from-to)517-525
Journal / PublicationIEEE Journal of Quantum Electronics
Volume47
Issue number4
Publication statusPublished - 2011

Abstract

We have measured the polarized visible and near-infrared, and unpolarized mid-infrared (2.7 μ m) emission spectra of photorefractive-damage-resistant locally Er-Mg-doped near-stoichiometric (NS) Ti : Mg : Er : LiNbO3 strip waveguide, fabricated on an X-cut initially congruent LiNbO3 substrate in sequence by local Er doping in air, Mg-Ti pre-diffusion in wet O2 and post Li-rich vapor transport equilibration treatment. From the measured emission spectra, the emission and absorption cross section spectra were calculated based upon McCumber theory. The spectroscopic features are discussed in comparison with the spectra recorded from the area outside the waveguide, and with the previously reported results of bulk-doped NS Er : Mg : LiNbO3 crystals and congruent Er : LiNbO3 bulk material or Ti : Er : LiNbO3 waveguide structure. The results show that the spectra of the NS waveguide are traditional and reveal small differences from those spectra outside the waveguide in spectral shape, polarization dependence, as well as cross section values. In contrast, the cross section values of the NS waveguide show considerable differences from those of bulk-doped NS material and congruent bulk material or waveguide structure. The 552, 673, 996, and 1531 nm emission lifetimes of the Er3+ ions outside the waveguide were also measured, and found to be comparable to the results of the bulk-doped NS crystal and the congruent bulk material or waveguide structure. © 2011 IEEE.

Research Area(s)

  • Emission and absorption cross sections, nearstoichiometric Ti:Mg:Er:LiNbO3 strip waveguide, photorefractive effect

Citation Format(s)

Emission and absorption cross sections of photorefractive-damage-resistant locally Er-Mg-doped near-stoichiometric Ti:Mg:Er : LiNbO3 strip waveguides. / Zhang, De-Long; Xu, Shi-Yu; Hua, Ping-Rang; Yu, Dao-Yin; Pun, Edwin Yue-Bun.

In: IEEE Journal of Quantum Electronics, Vol. 47, No. 4, 5730179, 2011, p. 517-525.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review