Laser-field-free orientation of state-selected asymmetric top molecules

Mun, Je Hoi; Takei, Daisuke; Minemoto, Shinichirou; Sakai, Hirofumi

doi:10.1103/physreva.89.051402

Cited by 26 publications

(20 citation statements)

References 25 publications

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“…Studies of asymmetric-top molecules, however, have been more narrow in scope. Most recent work has focused only on transient alignment, with the goal of achieving field-free three-dimensional alignment [19,23,24], for which SO 2 is a well-studied target. This approach holds promise for many applications, but does not permit the study of intermolecular interactions or other processes over multiple picosecond timescales.…”

Section: B Previous Workmentioning

confidence: 99%

Collisional decoherence and rotational quasirevivals in asymmetric-top molecules

et al. 2016

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We demonstrate the observation of quasi-periodic revivals out to 27 ps in an impulsively-aligned asymmetric-top molecule, sulfur dioxide (SO 2), at high sample temperature and density (295 K, 0.5 bar). We find that the asymmetric top exhibits a strong correlation between population alignment and population lifetime (r = 0.97), in accordance with the trend observed in linear molecules. We use a linear birefringence measurement fit to a full quantum simulation of the asymmetric rotor, and are able to separately measure both the population (T 1) and coherence (T 2) lifetimes of the rotational wavepacket. Additionally, we observe a high rate of elastic decoherence (T * 2 = 9.6 ps), and attribute this to long-range interactions mediated by the permanent dipole of the SO 2 molecule. We propose the use of birefringence measurements to study intermolecular interactions in a coherent ensemble, as a step toward using field-free alignment to investigate reaction dynamics and dissipative processes.

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Section: B Previous Workmentioning

confidence: 99%

Collisional decoherence and rotational quasirevivals in asymmetric-top molecules

et al. 2016

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“…It should be noted that to achieve higher degrees of alignment, for example, an electrostatic-molecular-deflector for selecting quantum states of sample molecules may be a suitable device 17 29 30 . Further, the most advanced molecular alignment or orientation technique allows us to align or orient state-selected asymmetric top molecules even in the field-free condition 31 .…”

Section: Discussionmentioning

confidence: 99%

Photoelectron diffraction from laser-aligned molecules with X-ray free-electron laser pulses

Nakajima

Teramoto

Akagi

et al. 2015

Sci Rep

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We report on the measurement of deep inner-shell 2p X-ray photoelectron diffraction (XPD) patterns from laser-aligned I2 molecules using X-ray free-electron laser (XFEL) pulses. The XPD patterns of the I2 molecules, aligned parallel to the polarization vector of the XFEL, were well matched with our theoretical calculations. Further, we propose a criterion for applying our molecular-structure-determination methodology to the experimental XPD data. In turn, we have demonstrated that this approach is a significant step toward the time-resolved imaging of molecular structures.

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“…It should be noted that, to achieve higher degrees of alignment, for example, an electrostatic-molecular-deflector for selecting quantum states of sample molecules may be a suitable device [47][48][49]. Furthermore, the most advanced molecular alignment or orientation technique allows us to align or orient state-selected asymmetric top molecules even in the field-free condition [50].…”

Section: Xpd Of Laser Aligned I 2 Moleculesmentioning

confidence: 99%

Photoelectron angular distributions from single oriented molecules: Past, present and future

Yagishita

2015

Journal of Electron Spectroscopy and Related Phenomena

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Laser-field-free orientation of state-selected asymmetric top molecules

Cited by 26 publications

References 25 publications

Collisional decoherence and rotational quasirevivals in asymmetric-top molecules

Collisional decoherence and rotational quasirevivals in asymmetric-top molecules

Photoelectron diffraction from laser-aligned molecules with X-ray free-electron laser pulses

Photoelectron angular distributions from single oriented molecules: Past, present and future

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