Coherent rotational excitation by intense nonresonant laser fields

被引：141

作者：

Ohshima, Yasuhiro ^{[1
]}

Hasegawa, Hirokazu

机构：

[1] Natl Inst Nat Sci, Inst Mol Sci, Okazaki, Aichi 4448585, Japan

来源：

INTERNATIONAL REVIEWS IN PHYSICAL CHEMISTRY | 2010年 / 29卷 / 04期

关键词：

intense laser physics; molecular alignment; quantum-state distribution; rotational wave packet; angular-momentum orientation; ASYMMETRIC-TOP MOLECULES; STIMULATED RAMAN-SPECTROSCOPY; PENDULAR-STATE SPECTROSCOPY; GAS ELECTRON-DIFFRACTION; SUB-DOPPLER SPECTROSCOPY; HIGH HARMONIC-GENERATION; WAVE-PACKETS; OPTICAL CENTRIFUGE; ALIGNED MOLECULES; POLAR-MOLECULES;

D O I：

10.1080/0144235X.2010.511769

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：

The rotation of molecules in the gas phase can be coherently excited by irradiation with strong nonresonant short laser pulses, interacting with the molecular anisotropic polarisability. Such coherent rotational excitation has been attracting much attention because of the intriguing nature of the rotational wave packet thus created, and its wide applicability to dynamical studies and advanced optics. In this review article, we first survey various experimental schemes adopted so far for externally controlling molecular rotation, and then describe a new approach based on a quantum-state resolved spectroscopic probe for investigating coherent rotational excitation by intense nonresonant laser fields. Representative examples are given to show how the method provides detailed information on excitation pathways in wave-packet creation, and how it realises full quantum-state reconstruction of the rotational wave packet in a favourable case. We also describe an advanced wave-packet control, i.e. the creation and characterisation of a unidirectionally rotating wave packet, and discuss a further extension of this approach to explore coherent vibrational excitation.

引用

页码：619 / 663

页数：45

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