White-light nanosource with directional emission

被引：85

作者：

Favre, C ^{[1
]}

Boutou, V

Hill, SC

Zimmer, W

Krenz, M

Lambrecht, H

Yu, J

Chang, RK

Woeste, L

Wolf, JP

机构：

[1] Univ Lyon 1, Spectrometrie Ion & Mol Lab, UMR5579, F-69622 Villeurbanne, France

[2] Army Res Lab, Adelphi, MD 20783 USA

[3] Free Univ Berlin, Inst Expt Phys, D-10195 Berlin, Germany

[4] Yale Univ, Dept Appl Phys, New Haven, CT 06520 USA

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.89.035002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first observation of white-light emission from femtosecond laser-induced plasma in a water droplet. Such emission is not observed with water in a cell. The microdroplet acts as a lens, focusing the incident light to nanosized regions within itself and directing the emission from these regions primarily back toward the laser source. This focusing increases the intensity so that multiphoton ionization generates plasma and causes it to reach the critical density during the initial part of the pulse, enabling the rest of the pulse to heat the plasma enough to emit in the visible.

引用

页码：350021 / 350024

页数：4

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