Low-temperature liquid-phase epitaxy and optical waveguiding of rare-earth-ion-doped $KY(WO_{4})_{2}$ thin layers

Romanyuk, Y.E. and Utke, I. and Ehrentraut, D. and Apostolopoulos, V. and Pollnau, M. and Garcia-Revilla, S. and Valiente, B. (2004) Low-temperature liquid-phase epitaxy and optical waveguiding of rare-earth-ion-doped $KY(WO_{4})_{2}$ thin layers. Journal of Crystal Growth, 269 (2-4). pp. 377-384. ISSN 0022-0248

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Abstract:	Crystalline $KY(WO_{4})_{2}$ thin layers doped with different rare-earth ions were grown on b-oriented, undoped $KY(WO_{4})_{2}$ substrates by liquid-phase epitaxy employing a low-temperature flux. The ternary chloride mixture of NaCl, KCl, and CsCl with a melting point of 480°C was used as a solvent. X-ray diffraction, differential-interference contrast microscopy, and profilometry confirmed that the layers were oriented in [0 1 0] direction with a thickness of 5–10 μm. $Tb^{3+}$ , $Dy^{3+}$ , or $Yb^{3+}$ ions were incorporated into the $KY(WO_{4})_{2}$ host, and their distribution coefficients were estimated by electron-probe microanalysis. The layers were crack-free and solvent inclusions could not be found, although the presence of secondary phases in the solution has been observed. The high optical quality of the layers was confirmed by the demonstration of passive and active planar waveguiding.
Item Type:	Article
Copyright:	© 2004 Elsevier
Link to this item:	http://purl.utwente.nl/publications/63986
Official URL:	http://dx.doi.org/10.1016/j.jcrysgro.2004.05.049
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Low-temperature liquid-phase epitaxy and optical waveguiding of rare-earth-ion-doped thin layers

Low-temperature liquid-phase epitaxy and optical waveguiding of rare-earth-ion-doped $KY(WO_{4})_{2}$ thin layers