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Application Of Ultrashort Light Pulses For High-Precision Measurements In Atoms

Measurements of coherent transients resulting from fine and hyperfine structure level splittings in alkaline atoms with frequencies up to 500 GHz have been performed with ultra-short light pulses in combination with a polarization sensitive detection scheme. Further the potentiality of high resolution level splitting measurements with a train of picosecond light pulses from a semiconductor laser is demonstrated.