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Issue 6, 2011
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Crystal growth and characterization of RbTi1−xyYbxNbyOPO4/RbTiOPO4 (001) non-linear optical epitaxial layers

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Abstract

In this paper we report the growth of RbTi1−xyYbxNbyOPO4/RbTiOPO4 epitaxial layers by the liquid phase epitaxy method and discuss their structural and optical characterization. The layers were grown on (001) oriented substrates because this plane contains the phase-matching direction for Yb3+ type-II second-harmonic generation. In RbTi0.971Yb0.015Nb0.014OPO4/RbTiOPO4 epitaxial layers we obtained enough contrast of refractive indices (Δnz = 0.007 at 632.8 nm) to guide the light in TM polarization. The maximum Yb3+ concentration obtained in these layers was 1.43 × 1020 atoms per cm3, which may be suitable for laser action. The lattice mismatch between the epitaxial layers and the substrates was low enough to obtain high quality epitaxial layers. Confinement of the light at 532 and 632.8 nm was demonstrated and there was good agreement between theoretical calculations, dark-mode spectra and modes of propagation.

Graphical abstract: Crystal growth and characterization of RbTi1−x−yYbxNbyOPO4/RbTiOPO4 (001) non-linear optical epitaxial layers

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Publication details

The article was received on 15 Sep 2010, accepted on 26 Nov 2010 and first published on 04 Jan 2011


Article type: Paper
DOI: 10.1039/C0CE00647E
Citation: CrystEngComm, 2011,13, 2015-2022
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    Crystal growth and characterization of RbTi1−xyYbxNbyOPO4/RbTiOPO4 (001) non-linear optical epitaxial layers

    J. Cugat, R. M. Solé, J. J. Carvajal, M. C. Pujol, X. Mateos, F. Díaz and M. Aguiló, CrystEngComm, 2011, 13, 2015
    DOI: 10.1039/C0CE00647E

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