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Updated: May 1, 2026

Direct Imaging of Laser-driven Ultrafast Molecular Rotation
Published on: February 4, 2017
Pulse train induced rotational excitation and orientation of a polar molecule
Ashish Tyagi1, Urvashi Arya2, Bhavna Vidhani3
1Department of Physics, Swami Shraddhanand College, University of Delhi, Delhi 110036, India.
Abstract:
We investigate theoretically the rotational excitation and field free molecular orientation of polar HBr molecule, interacting with train of ultrashort laser pulses. By adjusting the number of pulses, pulse period and the intensity of the pulse, one can suppress a population while simultaneously enhancing the desired population in particular rotational state. We have used train of laser pulses of different shaped pulse envelopes. The dynamics and orientation of molecules in the presence of pulse train of different shapes is studied and explained.
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