Phase-locking of a 2.5 THz quantum cascade laser to a frequency comb using a GaAs photomixer.

Abstract

We report the heterodyne detection and phase locking of a 2.5 THz quantum cascade laser (QCL) using a terahertz frequency comb generated in a GaAs photomixer using a femtosecond fiber laser. With 10 mW emitted by the QCL, the phase-locked signal at the intermediate frequency yields 80 dB of signal-to-noise ratio in a bandwidth of 1 Hz.

DOI: 10.1364/OL.36.003969

Cite this paper

@article{Ravaro2011PhaselockingOA, title={Phase-locking of a 2.5 THz quantum cascade laser to a frequency comb using a GaAs photomixer.}, author={M. Ravaro and Christophe Manquest and Carlo Sirtori and Sebasti{\'a}n Barbieri and Georgio Santarelli and Karine Blary and J . - F . Lampin and Suraj P. Khanna and Edmund H. Linfield}, journal={Optics letters}, year={2011}, volume={36 20}, pages={3969-71} }