Laser-field-free molecular orientation with combined electrostatic and rapidly-turned-off laser fields

Sugawara, Y.; Goban, Akihisa; Minemoto, Shinichirou; Sakai, Hirofumi

doi:10.1103/physreva.77.031403

Cited by 53 publications

(27 citation statements)

References 25 publications

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“…Analogously to the ground state of a linear molecule in combined electric and non-resonant laser fields, the loss of adiabaticity in the field-dressed dynamics of |0 0,0 0 t is due to the formation of the quasidegenerate pendular doublets [26]. Thus, increasing the FWHM of the pulse will increase the orientation [25,26,42,43]. In Fig.…”

Section: Field-dressed Dynamics Of the Ground State Of Several Irmentioning

confidence: 99%

Rotational dynamics of an asymmetric-top molecule in parallel electric and nonresonant laser fields

Omiste

González‐Férez

2013

Phys. Rev. A

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We present a theoretical study of the rotational dynamics of asymmetry top molecules in an electric field and a parallel non-resonant linearly polarized laser pulse. The time-dependent Schrödinger equation is solved within the rigid rotor approximation. Using the benzonitrile molecule as prototype, we investigate the field-dressed dynamics for experimentally accessible field configurations and compare these results to the adiabatic predictions. We show that for an asymmetric top molecule in parallel fields, the formation of the pendular doublets and the avoided crossings between neighboring levels are the two main sources of non-adiabatic effects. We also provide the field parameters under which the adiabatic dynamics would be achieved.

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Section: Field-dressed Dynamics Of the Ground State Of Several Irmentioning

confidence: 99%

Rotational dynamics of an asymmetric-top molecule in parallel electric and nonresonant laser fields

Omiste

González‐Férez

2013

Phys. Rev. A

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“…In the previous work [21], we presented a proposal to be used for enhancing the efficiency of PA with an asymmetric slowly turned-on and rapidly turned-off (STRT) laser pulse which has been used to control the molecular orientation [22][23][24][25]. In the present work, we demonstrate that a higher PA probability can be achieved with a train of STRT pulses.…”

mentioning

confidence: 57%

Efficient photoassociation with a train of asymmetric laser pulses

2011

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The photoassociation (PA) dynamics implemented by a train of asymmetric slowly turned-on and rapidly turned-off (STRT) laser pulses is investigated theoretically with Cs 2 as an example. A higher PA efficiency is achieved by optimizing the parameters of the STRT pulse train. The PA reaction goes partly beyond the scope of the PA window. Numerical calculations show that an efficient population accumulation in the PA process can be realized with the STRT laser-pulse train which is available in the current experiment based on laser mode-lock and shaping technology.

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“…From this perspective, a more promising approach in the near future seems to be the use of two-color laser pulses [32]. In the nonresonant situation, this approach has already been applied in adiabatic conditions [24], combined with a static electric field [33] or in the sudden regime [23,25,34]. It has been shown in Refs.…”

Section: Introductionmentioning

confidence: 99%

Field-free molecular orientation of1Σand2Πmolecules at high temperature

et al. 2012

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We analyze the control of field-free molecular orientation at high temperature by use of a two-color laser bipulse strategy proposed in Zhang et al. [Phys. Rev. A 83, 043410 (2011)]. A general study shows that there exist two types of linear molecules for which a different mechanism has to be used. For molecules with a large hyperpolarizability, a monochromatic laser pre-pulse is applied before the two-color laser pulse at a time close to the rotational period T r , while for molecules with a small hyperpolarizability, the optimal delay is found close to T r /4 or 3T r /4. We extend this analysis to the case of a 2 molecule such as NO where a similar control strategy can be derived. These control processes are robust against temperature effects.

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Laser-field-free molecular orientation with combined electrostatic and rapidly-turned-off laser fields

Cited by 53 publications

References 25 publications

Rotational dynamics of an asymmetric-top molecule in parallel electric and nonresonant laser fields

Rotational dynamics of an asymmetric-top molecule in parallel electric and nonresonant laser fields

Efficient photoassociation with a train of asymmetric laser pulses

Field-free molecular orientation of1Σand2Πmolecules at high temperature

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