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Updated: Jan 24, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
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Conical Interfaces between Two Immiscible Fluids Induced by an Optical Laser Beam.

A Girot1, J Petit1, R Saiseau1

  • 1University of Bordeaux, CNRS, LOMA, UMR 5798, F-33405 Talence, France.

Physical Review Letters
|May 21, 2019
PubMed
Summary
This summary is machine-generated.

Laser beams can create conical interface deformations, similar to Taylor cones. Researchers manipulated cone shape with fluid and laser settings, opening new optical spraying possibilities.

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Area of Science:

  • Optofluidics
  • Interface Science
  • Nonlinear Optics

Background:

  • Taylor cones are well-known phenomena in electrospraying, involving fluid cone formation under an electric field.
  • Optical manipulation of fluid interfaces offers potential for novel microfluidic and spraying applications.

Purpose of the Study:

  • To demonstrate laser-induced conical interface deformations analogous to electrical Taylor cones.
  • To investigate the influence of fluid and laser parameters on cone morphology.
  • To develop a theoretical framework describing these optical phenomena.

Main Methods:

  • Experimental investigation of fluid interfaces subjected to laser irradiation.
  • Systematic variation of fluid properties (e.g., low interfacial tension) and laser parameters.
  • Theoretical modeling to explain observed cone formation and morphology.

Main Results:

  • Conical interface deformations, termed optical Taylor cones, were successfully generated using laser beams.
  • Cone morphology was controllable via adjustments to fluid and laser parameters.
  • A theoretical model accurately predicted experimental observations across various fluid systems.
  • The cone angle was found to be independent of refractive index contrast at the leading order.

Conclusions:

  • Laser-induced conical deformations provide a new optofluidic method for interface manipulation.
  • This research establishes optical spraying as a viable alternative to electrospraying.
  • The findings enable precise optical control over interface shaping for advanced applications.