Improved-index-contrast KY(WO4)2:Gd, Lu, Yb epitaxial waveguides suitable for highly efficient waveguide lasing

S. Aravazhi; D. Geskus; Kerstin Worhoff; Markus Pollnau

Improved-index-contrast KY(WO₄)₂:Gd, Lu, Yb epitaxial waveguides suitable for highly efficient waveguide lasing

S. Aravazhi
, D. Geskus
, Kerstin Worhoff
, Markus Pollnau

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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Abstract

High-quality crystalline KY(WO4)2:Yb3+ layers co-doped with large concentrations of optically inert Gd3+ and Lu3+ ions were grown by vertical liquid phase epitaxy. The codoping enhances the refractive index contrast between the active layer and the undoped KY(WO4)2 substrate to ~7.5×10-3. A K2W2O7 solvent was employed for the growth of layers onto undoped (010)-oriented KYW substrates. Single crystalline layers of thickness 5-10 µm were grown at low level of supersaturation and growth temperatures of 920-923°C. The layer quality was studied by X-ray diffraction. The composition of the grown layers was determined by laser-ablation inductively-coupled-plasma mass spectrometry (LA-ICP-MS). Planar waveguide lasers with low laser threshold of 18 mW, record-high slope efficiency of 82.3%, and maximum output power of 195 mW have been achieved.

Original language	Undefined
Title of host publication	Proceedings of the 2009 Annual Symposium of the IEEE Photonics Benelux Chapter
Editors	Stefano Beri, Philippe Tassin, Gordon Craggs, Xaveer Leijtens, Jan Dankaert
Publisher	VUBPress Brussels University Press
Pages	133-136
Number of pages	4
ISBN (Print)	978-90-5487-650-2
Publication status	Published - 5 Nov 2009
Event	14th Annual Symposium of the IEEE Photonics Benelux Chapter 2009 - Brussels, Belgium Duration: 5 Nov 2009 → 6 Nov 2009 Conference number: 14

Publication series

Name
Publisher	VUBPress Brussels University Press

Conference

Conference	14th Annual Symposium of the IEEE Photonics Benelux Chapter 2009
Country/Territory	Belgium
City	Brussels
Period	5/11/09 → 6/11/09

Keywords

IR-69943
METIS-265796
Crystal growth
epitaxial
IOMS-APD: Active Photonic Devices
LPE
KYW
EWI-17451
Laser

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Cite this

Aravazhi, S., Geskus, D., Worhoff, K., & Pollnau, M. (2009). Improved-index-contrast KY(WO₄)₂:Gd, Lu, Yb epitaxial waveguides suitable for highly efficient waveguide lasing. In S. Beri, P. Tassin, G. Craggs, X. Leijtens, & J. Dankaert (Eds.), Proceedings of the 2009 Annual Symposium of the IEEE Photonics Benelux Chapter (pp. 133-136). VUBPress Brussels University Press. http://eprints.eemcs.utwente.nl/secure2/17451/01/IEEE_Benelux_2009_Proceedings_Aravazhi.pdf

Aravazhi, S. ; Geskus, D. ; Worhoff, Kerstin et al. / Improved-index-contrast KY(WO₄)₂:Gd, Lu, Yb epitaxial waveguides suitable for highly efficient waveguide lasing. Proceedings of the 2009 Annual Symposium of the IEEE Photonics Benelux Chapter. editor / Stefano Beri ; Philippe Tassin ; Gordon Craggs ; Xaveer Leijtens ; Jan Dankaert. VUBPress Brussels University Press, 2009. pp. 133-136

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title = "Improved-index-contrast KY(WO4)2:Gd, Lu, Yb epitaxial waveguides suitable for highly efficient waveguide lasing",

abstract = "High-quality crystalline KY(WO4)2:Yb3+ layers co-doped with large concentrations of optically inert Gd3+ and Lu3+ ions were grown by vertical liquid phase epitaxy. The codoping enhances the refractive index contrast between the active layer and the undoped KY(WO4)2 substrate to \textasciitilde{}7.5×10-3. A K2W2O7 solvent was employed for the growth of layers onto undoped (010)-oriented KYW substrates. Single crystalline layers of thickness 5-10 µm were grown at low level of supersaturation and growth temperatures of 920-923°C. The layer quality was studied by X-ray diffraction. The composition of the grown layers was determined by laser-ablation inductively-coupled-plasma mass spectrometry (LA-ICP-MS). Planar waveguide lasers with low laser threshold of 18 mW, record-high slope efficiency of 82.3\%, and maximum output power of 195 mW have been achieved.",

keywords = "IR-69943, METIS-265796, Crystal growth, epitaxial, IOMS-APD: Active Photonic Devices, LPE, KYW, EWI-17451, Laser",

author = "S. Aravazhi and D. Geskus and Kerstin Worhoff and Markus Pollnau",

year = "2009",

month = nov,

day = "5",

language = "Undefined",

isbn = "978-90-5487-650-2",

publisher = "VUBPress Brussels University Press",

pages = "133--136",

editor = "Stefano Beri and Philippe Tassin and Gordon Craggs and Xaveer Leijtens and Jan Dankaert",

booktitle = "Proceedings of the 2009 Annual Symposium of the IEEE Photonics Benelux Chapter",

note = "14th Annual Symposium of the IEEE Photonics Benelux Chapter 2009 ; Conference date: 05-11-2009 Through 06-11-2009",

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Aravazhi, S, Geskus, D, Worhoff, K & Pollnau, M 2009, Improved-index-contrast KY(WO₄)₂:Gd, Lu, Yb epitaxial waveguides suitable for highly efficient waveguide lasing. in S Beri, P Tassin, G Craggs, X Leijtens & J Dankaert (eds), Proceedings of the 2009 Annual Symposium of the IEEE Photonics Benelux Chapter. VUBPress Brussels University Press, pp. 133-136, 14th Annual Symposium of the IEEE Photonics Benelux Chapter 2009, Brussels, Belgium, 5/11/09. <http://eprints.eemcs.utwente.nl/secure2/17451/01/IEEE_Benelux_2009_Proceedings_Aravazhi.pdf>

Improved-index-contrast KY(WO₄)₂:Gd, Lu, Yb epitaxial waveguides suitable for highly efficient waveguide lasing. / Aravazhi, S.; Geskus, D.; Worhoff, Kerstin et al.
Proceedings of the 2009 Annual Symposium of the IEEE Photonics Benelux Chapter. ed. / Stefano Beri; Philippe Tassin; Gordon Craggs; Xaveer Leijtens; Jan Dankaert. VUBPress Brussels University Press, 2009. p. 133-136.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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N2 - High-quality crystalline KY(WO4)2:Yb3+ layers co-doped with large concentrations of optically inert Gd3+ and Lu3+ ions were grown by vertical liquid phase epitaxy. The codoping enhances the refractive index contrast between the active layer and the undoped KY(WO4)2 substrate to ~7.5×10-3. A K2W2O7 solvent was employed for the growth of layers onto undoped (010)-oriented KYW substrates. Single crystalline layers of thickness 5-10 µm were grown at low level of supersaturation and growth temperatures of 920-923°C. The layer quality was studied by X-ray diffraction. The composition of the grown layers was determined by laser-ablation inductively-coupled-plasma mass spectrometry (LA-ICP-MS). Planar waveguide lasers with low laser threshold of 18 mW, record-high slope efficiency of 82.3%, and maximum output power of 195 mW have been achieved.

AB - High-quality crystalline KY(WO4)2:Yb3+ layers co-doped with large concentrations of optically inert Gd3+ and Lu3+ ions were grown by vertical liquid phase epitaxy. The codoping enhances the refractive index contrast between the active layer and the undoped KY(WO4)2 substrate to ~7.5×10-3. A K2W2O7 solvent was employed for the growth of layers onto undoped (010)-oriented KYW substrates. Single crystalline layers of thickness 5-10 µm were grown at low level of supersaturation and growth temperatures of 920-923°C. The layer quality was studied by X-ray diffraction. The composition of the grown layers was determined by laser-ablation inductively-coupled-plasma mass spectrometry (LA-ICP-MS). Planar waveguide lasers with low laser threshold of 18 mW, record-high slope efficiency of 82.3%, and maximum output power of 195 mW have been achieved.

KW - IR-69943

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KW - epitaxial

KW - IOMS-APD: Active Photonic Devices

KW - LPE

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KW - EWI-17451

KW - Laser

M3 - Conference contribution

SN - 978-90-5487-650-2

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EP - 136

BT - Proceedings of the 2009 Annual Symposium of the IEEE Photonics Benelux Chapter

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A2 - Leijtens, Xaveer

A2 - Dankaert, Jan

PB - VUBPress Brussels University Press

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Y2 - 5 November 2009 through 6 November 2009

ER -