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Making the Best of Mixed-Field Orientation of Polar Molecules: A Recipe for Achieving Adiabatic Dynamics in an Electrostatic Field Combined with Laser Pulses

MPG-Autoren
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Küpper,  Jochen
Center for Free-Electron Laser Science, DESY;
University of Hamburg;
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Friedrich,  Bretislav
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Zitation

Nielsen, J. H., Stapelfeldt, H., Küpper, J., Friedrich, B., Omiste, J., & Gonzales-Ferez, R. (2012). Making the Best of Mixed-Field Orientation of Polar Molecules: A Recipe for Achieving Adiabatic Dynamics in an Electrostatic Field Combined with Laser Pulses. Physical Review Letters, 108(19): 193001. doi:10.1103/PhysRevLett.108.193001.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-000F-4406-7
Zusammenfassung
We have experimentally and theoretically investigated the mixed-field orientation of rotational-stateselected
OCS molecules and achieved strong degrees of alignment and orientation. The applied
moderately intense nanosecond laser pulses are long enough to adiabatically align molecules.
However, in combination with a weak dc electric field, the same laser pulses result in nonadiabatic
dynamics of the mixed-field orientation. These observations are fully explained by calculations employing
both adiabatic and nonadiabatic (time-dependent) models