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arXiv · 1506.00232

Generation of Kerr combs centered at 4.5{\mu}m in crystalline microresonators pumped by quantum cascade lasers

Anatoliy A. Savchenkov·Vladimir. S. Ilchenko·Fabio Di Teodoro·Paul M. Belden·William T. Lotshaw·Andrey B. Matsko·Lute Maleki
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Abstract

We report on the generation of mid-infrared Kerr frequency combs in high-finesse CaF$_2$ and MgF$_2$ whispering-gallery mode resonators pumped with continuous wave room temperature quantum cascade lasers. The combs were centered at 4.5$\mu$m, the longest wavelength to date. A frequency comb wider than a half of an octave was demonstrated when approximately 20mW of pump power was coupled to an MgF2 resonator characterized with quality factor exceeding 10$^8$.

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Anatoliy A. Savchenkov, Vladimir. S. Ilchenko, Fabio Di Teodoro, Paul M. Belden, William T. Lotshaw, Andrey B. Matsko, Lute Maleki. 2015-05-31. Generation of Kerr combs centered at 4.5{\mu}m in crystalline microresonators pumped by quantum cascade lasers. https://doi.org/10.1364/ol.40.003468

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