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Related Experiment Video

Updated: Jun 7, 2026

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
13:02

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation

Published on: February 25, 2017

Materials processing with a tightly focused femtosecond laser vortex pulse.

Cyril Hnatovsky1, Vladlen G Shvedov, Wieslaw Krolikowski

  • 1Laser Physics Centre, Research School of Physics and Engineering, The Australian National University,Canberra Australian Capital Territory 0200, Australia. chn111@physics.anu.edu.au

Optics Letters
|October 23, 2010
PubMed
Summary

Researchers demonstrate material modification using femtosecond laser vortex pulses. This technique precisely machines micrometer ring structures with sub-100nm groove thickness in glass materials.

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Area of Science:

  • Optics and Photonics
  • Materials Science
  • Laser Physics

Background:

  • Material modification using lasers is crucial for microfabrication.
  • Femtosecond laser pulses offer high precision due to minimal thermal damage.
  • Vortex beams possess unique polarization and phase properties.

Discussion:

  • This study introduces femtosecond laser vortex pulses for material ablation.
  • The synthesis involved a polarization-singularity beam converter in a uniaxial medium.
  • Focusing with moderate and high numerical aperture (NA) optics was employed.

Key Insights:

  • First demonstration of material modification using single femtosecond laser vortex pulses.
  • Achieved precise machining of micrometer-size ring-shaped structures.

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Last Updated: Jun 7, 2026

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  • Controlled groove thickness to below 100nm with uniform precision.

    • Outlook:

    • Potential for advanced micro- and nanofabrication techniques.
    • Exploration of different laser parameters and materials.
    • Further investigation into the physics of vortex beam-matter interaction.