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

Microstructured KY(WO4)2:Gd3+, Lu3+, Yb3+ channel waveguide laser
Microstructured KY(WO4)2:Gd3+, Lu3+, Yb3+ channel waveguide laser
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.
1094-4087
8853-8858
Geskus, D.
2abd96ed-8ced-47ce-b2c2-28e008edea65
Aravazhi, S.
466dd0ea-aae1-4d35-b212-e598e0228cd1
Grivas, C.
7f564818-0ac0-4127-82a7-22e87ac35f1a
Wörhoff, K.
7d7f4adf-195c-4ff0-8f79-9f561127a9bb
Pollnau, M.
1094856b-791a-4050-98d9-c07777d5f0f5
Geskus, D.
2abd96ed-8ced-47ce-b2c2-28e008edea65
Aravazhi, S.
466dd0ea-aae1-4d35-b212-e598e0228cd1
Grivas, C.
7f564818-0ac0-4127-82a7-22e87ac35f1a
Wörhoff, K.
7d7f4adf-195c-4ff0-8f79-9f561127a9bb
Pollnau, M.
1094856b-791a-4050-98d9-c07777d5f0f5

Geskus, D., Aravazhi, S., Grivas, C., Wörhoff, K. and Pollnau, M. (2010) Microstructured KY(WO4)2:Gd3+, Lu3+, Yb3+ channel waveguide laser. Optics Express, 18 (9), 8853-8858. (doi:10.1364/OE.18.008853).

Record type: Article

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.

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Published date: 13 April 2010

Identifiers

Local EPrints ID: 441533
URI: http://eprints.soton.ac.uk/id/eprint/441533
ISSN: 1094-4087
PURE UUID: cd5ccbc7-361a-40f2-9d8b-beb94229ee8e

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Date deposited: 17 Jun 2020 16:30
Last modified: 22 Sep 2020 16:53

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Contributors

Author: D. Geskus
Author: S. Aravazhi
Author: C. Grivas
Author: K. Wörhoff
Author: M. Pollnau

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