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.

νn=n⋅fr+f0nu sub n equals n center dot f sub r plus f sub 0 optical frequency comb

: By passing the comb through a gas, scientists can identify "molecular fingerprints" to detect pollutants, greenhouse gases, or even diseases in a person's breath. : They act as "gears" that take the

: Generated by modulating a continuous laser with radio waves, allowing for highly tunable tooth spacing. Optical Frequency Combs | NIST optical frequency comb