Communication: Switched wave packets with spectrally truncated chirped pulses

被引：22

作者：

Chatterley, Adam S. ^{[1
]}

Karamatskos, Evangelos T. ^{[2
,3
]}

Schouder, Constant ^{[1
]}

Christiansen, Lars ^{[1
]}

Jorgensen, Anders V. ^{[1
]}

Mullins, Terry ^{[2
]}

Kuepper, Jochen ^{[2
,3
,4
]}

Stapelfeldt, Henrik ^{[1
]}

机构：

[1] Aarhus Univ, Dept Chem, Langelandsgade 140, DK-8000 Aarhus C, Denmark

[2] Deutsch Elektronen Synchrotron DESY, Ctr Free Electron Laser Sci, Notkestr 85, D-22607 Hamburg, Germany

[3] Univ Hamburg, Dept Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany

[4] Univ Hamburg, Hamburg Ctr Ultrafast Imaging, Luruper Chaussee 149, D-22761 Hamburg, Germany

来源：

JOURNAL OF CHEMICAL PHYSICS | 2018年 / 148卷 / 22期

基金：

欧洲研究理事会; 欧盟地平线“2020”;

关键词：

NONADIABATIC ALIGNMENT; MOLECULAR ALIGNMENT; LASER-PULSES; DYNAMICS; REVIVALS; PHASE;

D O I：

10.1063/1.5028359

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：

A new technique for obtaining switched wave packets using spectrally truncated chirped laser pulses is demonstrated experimentally and numerically by one-dimensional alignment of both linear and asymmetric top molecules. Using a simple long-pass transmission filter, a pulse with a slow turn-on and a rapid turn-off is produced. The degree of alignment, characterized by < cos(2)theta(2D)>, rises along with the pulse intensity and reaches a maximum at the peak of the pulse. After truncation, < cos(2)theta(2D)> drops sharply but exhibits pronounced half and full revivals. The experimental alignment dynamics trace agrees very well with a numerically calculated trace based on the solution of the time-dependent Schrodinger equation. However, the extended periods of field-free alignment of asymmetric tops following pulse truncation reported previously are not reproduced in our work. Published by AIP Publishing.

引用

页数：6

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