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 |
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Pages (from-to) | 8853-8858 |
Number of pages | 6 |
Journal | Optics express |
Volume | 18 |
Issue number | 8 |
DOIs | |
Publication status | Published - Apr 2010 |
Keywords
- IOMS-APD: Active Photonic Devices
- Ytterbium
- Waveguides
- Channeled
- Lasers
- n/a OA procedure