Control of wavepacket dynamics in mixed alkali metal clusters by optimally shaped fs pulses |
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| Authors: | A. Bartelt S. Minemoto C. Lupulescu Š. Vajda L. Wöste |
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| Affiliation: | Institut für Experimentalphysik, Freie Universit?t Berlin, Arnimallee 14, D-14195 Berlin, Germany, DE
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| Abstract: | We have performed adaptive feedback optimization of phase-shaped femtosecond laser pulses to control the wavepacket dynamics of small mixed alkali-metal clusters. An optimization algorithm based on Evolutionary Strategies was used to maximize the ion intensities. The optimized pulses for NaK and Na2K converged to pulse trains consisting of numerous peaks. The timing of the elements of the pulse trains corresponds to integer and half integer numbers of the vibrational periods of the molecules, reflecting the wavepacket dynamics in their excited states. Received 4 December 2001 |
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| Keywords: | PACS. 82.50.Nd Control of photochemical reactions – 82.33.Fg Reactions in clusters – 82.53.Eb Pump probe studies of photodissociation |
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