Author:
Komagata K. N.,Parriaux A.,Hillbrand J.,Wittwer V. J.,Faist J.,Südmeyer T.
Abstract
We demonstrate the tight-lock of a mid-infrared quantum cascade laser frequency comb by near-infrared light modulation. Our result, improved mutual coherence compared to drive-current modulation alone, is pertinent for highly-sensitive dual-comb spectroscopy.