Details

Autor(en) / Beteiligte

• Salomon, Julien
• Dion, Claude M
• Turinici, Gabriel

Titel

Optimal molecular alignment and orientation through rotational ladder climbing

Ist Teil von

• The Journal of chemical physics, 2005-10, Vol.123 (14), p.144310-144310

Ort / Verlag

United States: American Institute of Physics

Erscheinungsjahr

2005

Link zum Volltext

Quelle

AIP Journals Complete

Beschreibungen/Notizen

• We study the control by electromagnetic fields of molecular alignment and orientation in a linear, rigid-rotor model. With the help of a monotonically convergent algorithm, we find that the optimal field is in the microwave part of the spectrum and acts by resonantly exciting the rotation of the molecule progressively from the ground state, i.e., by rotational ladder climbing. This mechanism is present not only when maximizing orientation or alignment, but also when using prescribed target states that simultaneously optimize the efficiency of orientation/alignment and its duration. The extension of the optimization method to consider a finite rotational temperature is also presented.