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Low-temperature liquid-phase epitaxy and optical waveguiding of rare-earth-ion-doped KY(WO4)2 thin layers

Low-temperature liquid-phase epitaxy and optical waveguiding of rare-earth-ion-doped KY(WO4)2 thin layers
Low-temperature liquid-phase epitaxy and optical waveguiding of rare-earth-ion-doped KY(WO4)2 thin layers
Crystalline KY(WO4)2 thin layers doped with different rare-earth ions were grown on b-oriented, undoped KY(WO4)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 ?m. Tb3+, Dy3+, or Yb3+ ions were incorporated into the KY(WO4)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.
A3. liquid-phase epitaxy, B1. rare-earth compounds, B1. tungstates
0022-0248
377-384
Romanyuk, Y.E.
b5346c59-0d54-47b2-a1bf-cfadb5cbe8c7
Utke, I.
9fd2bb6a-5477-45ce-a76c-2b18bd64c8cc
Ehrentraut, D.
279c68cb-8d0a-4ee5-b80f-e3eaf3b0d34a
Apostolopoulos, V.
8a898740-4c71-4040-a577-9b9d70530b4d
Pollnau, M.
1094856b-791a-4050-98d9-c07777d5f0f5
García-Revilla, S.
e56907fa-8ed3-431b-9ce4-33f79510176d
Valiente, R.
9a7fe7d9-857d-4a90-bf13-e5b53111773b
Romanyuk, Y.E.
b5346c59-0d54-47b2-a1bf-cfadb5cbe8c7
Utke, I.
9fd2bb6a-5477-45ce-a76c-2b18bd64c8cc
Ehrentraut, D.
279c68cb-8d0a-4ee5-b80f-e3eaf3b0d34a
Apostolopoulos, V.
8a898740-4c71-4040-a577-9b9d70530b4d
Pollnau, M.
1094856b-791a-4050-98d9-c07777d5f0f5
García-Revilla, S.
e56907fa-8ed3-431b-9ce4-33f79510176d
Valiente, R.
9a7fe7d9-857d-4a90-bf13-e5b53111773b

Romanyuk, Y.E., Utke, I., Ehrentraut, D., Apostolopoulos, V., Pollnau, M., García-Revilla, S. and Valiente, R. (2004) Low-temperature liquid-phase epitaxy and optical waveguiding of rare-earth-ion-doped KY(WO4)2 thin layers. Journal of Crystal Growth, 269 (2-4), 377-384. (doi:10.1016/j.jcrysgro.2004.05.049).

Record type: Article

Abstract

Crystalline KY(WO4)2 thin layers doped with different rare-earth ions were grown on b-oriented, undoped KY(WO4)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 ?m. Tb3+, Dy3+, or Yb3+ ions were incorporated into the KY(WO4)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.

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More information

Published date: 1 September 2004
Keywords: A3. liquid-phase epitaxy, B1. rare-earth compounds, B1. tungstates

Identifiers

Local EPrints ID: 49016
URI: http://eprints.soton.ac.uk/id/eprint/49016
ISSN: 0022-0248
PURE UUID: 4f4eeae4-1a2c-47c5-a81e-33b6a59caf07
ORCID for V. Apostolopoulos: ORCID iD orcid.org/0000-0003-3733-2191

Catalogue record

Date deposited: 22 Oct 2007
Last modified: 10 Dec 2019 01:42

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