Implementation of a single femtosecond optical frequency comb for molecular cooling

摘要: We show that a single femtosecond optical frequency comb may be used to induce two-photon transitions between molecular vibrational levels form ultracold molecules, e.g., KRb. The phase across an individual pulse in the train is sinusoidally modulated with carefully chosen modulation amplitude and frequency. Piecewise adiabatic population transfer fulfilled final state by each applied providing controlled accumulation state. Detuning carrier from one-photon resonances changes time scale of dynamics but leads same complete A standard no shown similar leading rovibrational cooling.