Microstructured KY(WO4)2:Gd3+, Lu3+, Yb3+ channel waveguide laser

D. Geskus; S. Aravazhi; C. Grivas; K. Wörhoff; M. Pollnau

doi:10.1364/OE.18.008853

Microstructured KY(WO₄)₂:Gd³⁺, Lu³⁺, Yb³⁺ channel waveguide laser

D. Geskus, S. Aravazhi, C. Grivas, K. Wörhoff, M. Pollnau

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

Epitaxially grown, 2.4-μm-thin layers of KY(WO₄)₂:Gd³⁺, Lu³⁺, Yb³⁺, which exhibit a high refractive index contrast with respect to the undoped KY(WO₄)₂ substrate, have been microstructured by Ar beam milling, providing 1.4-μm-deep ridge channel waveguides of 2 to 7 μm width, and overgrown by an undoped KY(WO₄)₂ layer. Channel waveguide laser operation was achieved with a launched pump power threshold of only 5 mW, a slope efficiency of 62% versus launched pump power, and 76 mW output power.

Original language	English
Pages (from-to)	8853-8858
Number of pages	6
Journal	Optics express
Volume	18
Issue number	8
DOIs	https://doi.org/10.1364/OE.18.008853
Publication status	Published - Apr 2010

Keywords

IOMS-APD: Active Photonic Devices
Ytterbium
Waveguides
Channeled
Lasers

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10.1364/OE.18.008853Licence: CC BY

Geskus2010microstructured
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title = "Microstructured KY(WO4)2:Gd3+, Lu3+, Yb3+ channel waveguide laser",

abstract = "Epitaxially grown, 2.4-μm-thin layers of KY(WO4)2:Gd3+, Lu3+, Yb3+, which exhibit a high refractive index contrast with respect to the undoped KY(WO4)2 substrate, have been microstructured by Ar beam milling, providing 1.4-μm-deep ridge channel waveguides of 2 to 7 μm width, and overgrown by an undoped KY(WO4)2 layer. Channel waveguide laser operation was achieved with a launched pump power threshold of only 5 mW, a slope efficiency of 62% versus launched pump power, and 76 mW output power.",

keywords = "IOMS-APD: Active Photonic Devices, Ytterbium, Waveguides, Channeled, Lasers",

author = "D. Geskus and S. Aravazhi and C. Grivas and K. W{\"o}rhoff and M. Pollnau",

note = "Open access article ",

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T1 - Microstructured KY(WO4)2:Gd3+, Lu3+, Yb3+ channel waveguide laser

AU - Geskus, D.

AU - Aravazhi, S.

AU - Grivas, C.

AU - Wörhoff, K.

AU - Pollnau, M.

N1 - Open access article

PY - 2010/4

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N2 - Epitaxially grown, 2.4-μm-thin layers of KY(WO4)2:Gd3+, Lu3+, Yb3+, which exhibit a high refractive index contrast with respect to the undoped KY(WO4)2 substrate, have been microstructured by Ar beam milling, providing 1.4-μm-deep ridge channel waveguides of 2 to 7 μm width, and overgrown by an undoped KY(WO4)2 layer. Channel waveguide laser operation was achieved with a launched pump power threshold of only 5 mW, a slope efficiency of 62% versus launched pump power, and 76 mW output power.

AB - Epitaxially grown, 2.4-μm-thin layers of KY(WO4)2:Gd3+, Lu3+, Yb3+, which exhibit a high refractive index contrast with respect to the undoped KY(WO4)2 substrate, have been microstructured by Ar beam milling, providing 1.4-μm-deep ridge channel waveguides of 2 to 7 μm width, and overgrown by an undoped KY(WO4)2 layer. Channel waveguide laser operation was achieved with a launched pump power threshold of only 5 mW, a slope efficiency of 62% versus launched pump power, and 76 mW output power.

KW - IOMS-APD: Active Photonic Devices

KW - Ytterbium

KW - Waveguides

KW - Channeled

KW - Lasers

U2 - 10.1364/OE.18.008853

DO - 10.1364/OE.18.008853

M3 - Article

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SP - 8853

EP - 8858

JO - Optics express

JF - Optics express

SN - 1094-4087

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