Field-free orientation dynamics of OCS molecule induced by utilizing two THz laser pulses

Zhang, You-De; Wang, Shuo; Zhan, Wei-Shen; Yang, Jian; Jing, Da Lei

doi:10.1088/1555-6611/aa698a

Cited by 1 publication

(1 citation statement)

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“…The combination of both, a dc field and a non-resonant laser pulse allows for a large degree of orientation and alignment in the adiabatic limit for linear [14][15][16][17] and asymmetric molecules [18][19][20][21][22][23], but it is extremely difficult to reach in general [22,23]. Many other experimental setups have been proposed to enhance the alignment of a molecular ensemble using external fields, such as the application of two laser pulses with different polarizations [24][25][26], the application of single cycle pulses [27] and single THz pulses [28,29], or a combination of THz and femtosecond laser [30,31] to efficiently achieve both orientation and alignment.…”

Section: Introductionmentioning

confidence: 99%

Theoretical study of asymmetric super-rotors: Alignment and orientation

Omiste

2018

Phys. Rev. A

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We report a theoretical study of the optical centrifuge acceleration of an asymmetric top molecule interacting with an electric static field by solving the time-dependent Schrödinger equation in the rigid rotor approximation. A detailed analysis of the mixing of the angular momentum in both the molecular and the laboratory fixed frames allow us to deepen the understanding of the main features of the acceleration process, for instance, the effective angular frequency of the molecule at the end of the pulse. In addition, we prove numerically that the asymmetric superrotors rotate around one internal axis and that their dynamics is confined to the plane defined by the polarization axis of the laser, in agreement with experimental findings. Furthermore, we consider the orientation patterns induced by the dc field, showing the characteristics of their structure as a function of the strength of the static field and the initial configuration of the fields.

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Section: Introductionmentioning

confidence: 99%

Theoretical study of asymmetric super-rotors: Alignment and orientation

Omiste

2018

Phys. Rev. A

View full text Add to dashboard Cite

show abstract

Field-free orientation dynamics of OCS molecule induced by utilizing two THz laser pulses

Cited by 1 publication

References 33 publications

Theoretical study of asymmetric super-rotors: Alignment and orientation

Theoretical study of asymmetric super-rotors: Alignment and orientation

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