Journal
OPTICS EXPRESS
Volume 25, Issue 23, Pages 29374-29379Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.25.029374
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Funding
- Deutsche Forschungsgemeinschaft [DFG Ki482/17-1]
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Highly efficient erbium-doped titanium in-diffused ridge waveguide optical amplifiers and lasers in x-cut congruent LiNbO3 pumped at 1486 nm have been developed. A total internal gain of 14 dB has been achieved in 4.6 cm-long waveguides for a coupled pump power of 200 mW. We demonstrated a laser operating at 1561 nm with a slope efficiency of 33% exceeding the best literature values for Er:Ti:LiNbO3 waveguide lasers. To improve the amplifier/laser performance, our novel fabrication technique of three-side Er and Ti in-diffusion into pre-defined ridges was used. (C) 2017 Optical Society of America
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