“…Although typically operated at significantly reduced spectral coverage, electro-optic dual optical frequency combs (EO-DOFC) are an attractive alternative owing to the simplicity of the methods to generate the dual combs from a single free-running laser while maintaining mutual phase coherence in the down-converted radiofrequency (RF) region [9,10,11,12,13,14,15,16]. In many areas, the limited bandwidth of a few cm -1 is advantageous to enhance sensitivity in photon counting applications, to significantly increase comb resolution for quantum state resolved studies of single absorption bands [17,18,19,20], or for the sub-Doppler coherent interrogation of atoms [21,22].…”