Deflection of Field-Free Aligned Molecules

Stern-Gerlach deflection of field-free aligned paramagnetic molecules.

The effects of laser-induced pre-alignment on the deflection of paramagnetic molecules by inhomogeneous static magnetic field are studied. Depending on the relevant Hund's coupling case of the molecule, two different effects were identified: either suppression of the deflection by laser pulses (Hund's coupling case (a) molecules, such as ClO), or a dramatic reconstruction of the broad distribut...

Strong-field ionization of aligned molecules

Theoretical studies of strong-field ionization of molecules are impeded by the complexity of the molecular electronic structure. Up till now, full ab initio calculations of the alignmentdependent ionization are available only for H2 and H2. For larger molecules, despite a tremendous amount of experiments, no ab initio calculations are available, and the most widely used approaches to explain st...

Field-free orientation of molecules.

We consider impulsive excitation of a linear polar molecule by a plane polarized electromagnetic "half-cycle" pulse in the terahertz range. A rotational wave packet is created with angular momentum states of different parity. The time evolution of the wave packet corresponds to alternating molecular orientations with respect to the polarization axis of the field. This field-free time-dependent ...

Optical gratings induced by field-free alignment of molecules

Alignment-assisted field-free orientation of rotationally cold CO molecules

We follow the alignment-assisted orientation technique proposed by Zhang et al. [Phys. Rev. A 83, 043410 (2011)] to experimentally demonstrate a substantial enhancement of the field-free orientation by using a combination of singleand two-color laser pulses. When a two-color orienting pulse is preceded by a single-color aligning pulse by a suitable time, the resulting orientation is thrice as l...