Andriy Danylov, Neal Erickson, Alexander Light, and Jerry Waldman
https://www.osapublishing.org/ol/abstract.cfm?uri=ol-40-21-5090
The 23rd and 31st harmonics of a microwave signal generated in a novel THz balanced Schottky diode mixer were used as a frequency stable reference source to phase lock solid-nitrogen-cooled 2.324 and 2.959 THz quantum cascade lasers. Hertz-level frequency stability was achieved, which was maintained for several hours.
© 2015 Optical Society of America
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