Abstract
This study investigates limitations of high power single-pass 399 nm light generations in periodically poled 5 mol% MgO doped lithium niobate (PPMgLN) waveguides arising from optical absorptions and the resulting thermal loading. A coupled thermo-optical model was employed to simulate 399 nm light generation process. It was found that after optimizing the waveguide length and the operating temperature, the output power of 0.393 W with almost no thermal inhibition can be achieved, which corresponds to a conversion efficiency of 78.6 %. It is expected that a compact and efficient high power 399 nm lasers can be realized by second harmonic generation in PPMgLN waveguides.
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Acknowledgments
This research work was financially supported by National Natural Scientific Foundation of China (11204205), the start-up Foundation of Taiyuan University of Technology and Natural Scientific Foundation of Taiyuan University of Technology (2013Z029). We wish to thank D. Wang for critical reading of the manuscript.
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Li, G., Wang, J. & Cui, Y. Possibility of high power UV light generation in periodically poled MgO doped lithium niobate waveguides. Opt Quant Electron 47, 2087–2094 (2015). https://doi.org/10.1007/s11082-014-0082-1
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DOI: https://doi.org/10.1007/s11082-014-0082-1