Selective strong-field enhancement and suppression of ionization with short laser pulses
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2016 American Physical Society. We experimentally demonstrate robust selective excitation and attenuation of atomic Rydberg level populations in sodium vapor (Na i) using intense laser pulses in the strong-field limit (>1012W/cm2). Coherent control of the atomic population and related ionization channels is realized for intensities above the over-the-barrier ionization intensity. Moreover, atomic excitation selectivity and high ionization yield are simultaneously achieved without the need to tailor the spectral phase of the laser. A qualitative model confirms that this strong-field coherent control arises through the manifestation of a Freeman resonance.
author list (cited authors)
Hart, N. A., Strohaber, J., Kolomenskii, A. A., Paulus, G. G., Bauer, D., & Schuessler, H. A.