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White-Light Nanosource with Directional Emission

Catherine Favre, Véronique Boutou, Steven C. Hill, Wiebke Zimmer, Marcel Krenz, Hendrik Lambrecht, Jin Yu, Richard K. Chang, Ludger Woeste, and Jean-Pierre Wolf
Phys. Rev. Lett. 89, 035002 – Published 26 June 2002
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Abstract

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.

  • Received 27 November 2001

DOI:https://doi.org/10.1103/PhysRevLett.89.035002

©2002 American Physical Society

Authors & Affiliations

Catherine Favre1, Véronique Boutou1, Steven C. Hill2, Wiebke Zimmer3, Marcel Krenz3, Hendrik Lambrecht1, Jin Yu1, Richard K. Chang4, Ludger Woeste3, and Jean-Pierre Wolf1

  • 1Laboratoire de Spectrométrie Ionique et Moléculaire (UMR5579), Université Lyon 1, 69622 Villeurbanne Cedex, France
  • 2Army Research Laboratory, 2800 Powder Mill Road, Adelphi, Maryland 20783-1197
  • 3Instiut fuer Experimentalphysik, Freie Universitaet Berlin, Arnimallee 14, 10195 Berlin, Germany
  • 4Department of Applied Physics, Yale University, New Haven, Connecticut 06520-8284

See Also

Light Beam from Water Droplets

JR Minkel
Phys. Rev. Focus 10, 1 (2002)

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Vol. 89, Iss. 3 — 15 July 2002

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