: Most combs are created using mode-locked lasers that produce a train of ultra-short pulses at regular intervals. The Comb Equation : Every individual frequency in the comb ( νnnu sub n ) is defined by just two parameters:
: Generated by modulating a continuous laser with radio waves, allowing for highly tunable tooth spacing. Optical Frequency Combs | NIST optical frequency comb
: They act as "gears" that take the incredibly fast ticks of optical atoms and divide them down to manageable microwave frequencies used in electronics. : Most combs are created using mode-locked lasers
: Used to calibrate spectrographs on telescopes to detect tiny wobbles in distant stars, helping find Earth-like exoplanets . : Used to calibrate spectrographs on telescopes to
Frequency combs bridge the gap between easy-to-measure radio frequencies and incredibly fast optical light waves.
νn=n⋅fr+f0nu sub n equals n center dot f sub r plus f sub 0