Control of THz emission from stark wave packets

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We present calculations of the quantum control of THz emission from Stark wave packets in sodium. Our method is based on the direct integration of the one-electron, time-dependent Schrödinger equation on a non-uniform, finite difference grid. We find that simple, experimentally feasible laser pulses are sufficient to optimize the frequency and intensity of the emitted THz radiation. A genetic algorithm is used to optimize the parameters of the excitation pulse. Our results indicate that the dynamics, and hence the emitted radiation, depend sensitively on these parameters, and that the control space is rich and quite complicated. © 1999 American Chemical Society.

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Journal of Physical Chemistry A

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