Tuneable laser locking to Optical Frequency Comb

Optical Frequency Combs (OFCs) have many appealing features such as stable frequency spacing between the comb tones or high optical frequency stability. These features are of interest in diverse fields including, but not limited to, high-accurate frequency metrology [1], telecommunications [2], or terahertz signal generation [3]. However, in many of these applications, it is only one or few comb tones that are of interest, requiring their isolation and often strong amplification. One of techniques to achieve this is phase locking of laser(s)s to selected OFC tone(s) [4].