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Doppler-Free Saturated Fluorescence Spectroscopy Of Lithium Using A Stabilized Frequency Comb, Michael E. Rowan
Doppler-Free Saturated Fluorescence Spectroscopy Of Lithium Using A Stabilized Frequency Comb, Michael E. Rowan
Honors Papers
The lineshapes of the D1 (22S1/2 → 22P1/2 ) and D2 (22S3/2 → 22P1/2) transitions in lithium were measured using a diode laser that was frequency-stabilized to a Ti:Sapphire 1 GHz optical frequency comb. The excitation was achieved by retroreflecting the diode laser, in effect producing the Doppler-free profiles for the center frequencies of transitions. The observed spectra were compared to density matrix calculations to gain insight into systematic effects including the dependence of Doppler-free profiles on power and polarization angle of the diode. For certain transitions, the method of saturated fluorescence spectroscopy inevitably leads to the presence of extra …