Observation of revival structure in femtosecond-laser-induced alignment of N2 with high-order harmonic generation

被引：42

作者：

Kaku, M ^{[1
]}

Masuda, K ^{[1
]}

Miyazaki, A ^{[1
]}

机构：

[1] Kyoto Univ, Inst Adv Energy, Uji, Kyoto 6110011, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 2004年 / 43卷 / 4B期

关键词：

revival structure; rotational wave packet; molecular alignment; high-order harmonic generation; femtosecond laser;

D O I：

10.1143/JJAP.43.L591

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report a new sensitive method using high-order harmonic generation to observe revival structure in fs-laser induced alignment of a rotational wave packet of molecules. Pump and probe fs-laser pulses with a time delay were focused collinearly into a pulsed N-2 gas jet, so that the pump pulse induces alignment of a ground-state rotational wave packet, and the delayed probe pulse produces harmonic radiation from the aligning molecules. The harmonic signal observed as a function of time delay has clearly demonstrated a typical time-dependent revival structure in the field-free alignment of molecules.

引用

页码：L591 / L593

页数：3

共 10 条

[1] Time-dependent alignment and orientation of molecules in combined electrostatic and pulsed nonresonant laser fields [J].