Quantum-state selection, alignment, and orientation of large molecules using static electric and laser fields

被引：136

作者：

Filsinger, Frank ^{[1
]}

Kuepper, Jochen ^{[1
]}

Meijer, Gerard ^{[1
]}

Holmegaard, Lotte ^{[2
]}

Nielsen, Jens H. ^{[3
]}

Nevo, Iftach ^{[2
]}

Hansen, Jonas L. ^{[4
]}

Stapelfeldt, Henrik ^{[2
,4
]}

机构：

[1] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

[2] Univ Aarhus, Dept Chem, DK-8000 Aarhus C, Denmark

[3] Univ Aarhus, Dept Phys & Astron, DK-8000 Aarhus C, Denmark

[4] Univ Aarhus, Interdisciplinary Nanosci Ctr, DK-8000 Aarhus C, Denmark

来源：

JOURNAL OF CHEMICAL PHYSICS | 2009年 / 131卷 / 06期

关键词：

electric field effects; macromolecules; molecular beams; molecular orientation; molecule-photon collisions; ULTRAVIOLET SPECTROSCOPY; REACTIVE SCATTERING; ALIGNING MOLECULES; POLAR-MOLECULES; DYNAMICS; DIPOLE; BEAM; CLUSTERS; CONSTANTS; SPECTRUM;

D O I：

10.1063/1.3194287

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Supersonic beams of polar molecules are deflected using inhomogeneous electric fields. The quantum-state selectivity of the deflection is used to spatially separate molecules according to their quantum state. A detailed analysis of the deflection and the obtained quantum-state selection is presented. The rotational temperatures of the molecular beams are determined from the spatial beam profiles and are all approximately 1 K. Unprecedented degrees of laser-induced alignment (<< cos(2) theta(2D)>>=0.972) and orientation of iodobenzene molecules are demonstrated when the state-selected samples are used. Such state-selected and oriented molecules provide unique possibilities for many novel experiments in chemistry and physics.

引用

页数：13

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