Quantum Resonances in Selective Rotational Excitation of Molecules with a Sequence of Ultrashort Laser Pulses. Zhdanovich, S., Bloomquist, C., Floß, J., Averbukh, I. S., Hepburn, J. W., & Milner, V. Physical Review Letters, 109(4):043003, American Physical Society, July, 2012. ![Quantum Resonances in Selective Rotational Excitation of Molecules with a Sequence of Ultrashort Laser Pulses [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex We experimentally investigate the effect of quantum resonance in the rotational excitation of the simplest quantum rotor—a diatomic molecule. Using the techniques of high-resolution femtosecond pulse shaping and rotational state-resolved detection, we measure directly the amount of energy absorbed by molecules interacting with a periodic train of laser pulses, and study their dependence on the train period. We show that the energy transfer is significantly enhanced at quantum resonance, and use this effect to demonstrate selective rotational excitation of two nitrogen isotopologs, 14N2 and 15N2. Moreover, by tuning the period of the pulse train in the vicinity of a fractional quantum resonance, we achieve selective rotational excitation of para- and ortho-isomers of 15N2.
@Article{Zhdanovich2012,
author = {Zhdanovich, Sergey and Bloomquist, C. and Floß, Johannes and Averbukh, Ilya Sh. and Hepburn, John W. and Milner, Valery},
journal = {Physical Review Letters},
title = {Quantum {Resonances} in {Selective} {Rotational} {Excitation} of {Molecules} with a {Sequence} of {Ultrashort} {Laser} {Pulses}},
year = {2012},
month = jul,
number = {4},
pages = {043003},
volume = {109},
abstract = {We experimentally investigate the effect of quantum resonance in the rotational excitation of the simplest quantum rotor—a diatomic molecule. Using the techniques of high-resolution femtosecond pulse shaping and rotational state-resolved detection, we measure directly the amount of energy absorbed by molecules interacting with a periodic train of laser pulses, and study their dependence on the train period. We show that the energy transfer is significantly enhanced at quantum resonance, and use this effect to demonstrate selective rotational excitation of two nitrogen isotopologs, 14N2 and 15N2. Moreover, by tuning the period of the pulse train in the vicinity of a fractional quantum resonance, we achieve selective rotational excitation of para- and ortho-isomers of 15N2.},
doi = {10.1103/PhysRevLett.109.043003},
file = {Full Text PDF:https\://journals.aps.org/prl/pdf/10.1103/PhysRevLett.109.043003:application/pdf;APS Snapshot:https\://journals.aps.org/prl/abstract/10.1103/PhysRevLett.109.043003:text/html},
publisher = {American Physical Society},
url = {https://link.aps.org/doi/10.1103/PhysRevLett.109.043003},
urldate = {2020-06-19TZ},
}
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