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Related Experiment Video

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Writing Bragg Gratings in Multicore Fibers
08:48

Writing Bragg Gratings in Multicore Fibers

Published on: April 20, 2016

Square core jacketed air-clad fiber.

John R Hayes1, Joanne C Flanagan, Tanya M Monro

  • 1Optoelectronics Research Centre University of Southampton, SO17 1BJ, UK. jrh@orc.soton.ac.uk

Optics Express
|June 17, 2009
PubMed
Summary
This summary is machine-generated.

Researchers created a novel multi-mode fiber that generates a top-hat beam profile. This fiber enables the direct fabrication of square ablation marks in indium tin oxide (ITO) using pulsed lasers without complex optics.

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Area of Science:

  • Optics and Photonics
  • Materials Science
  • Laser Technology

Background:

  • Developing specialized optical fibers is crucial for advanced laser applications.
  • Achieving precise beam shaping for material processing often requires complex optical setups.
  • Air-clad fibers offer unique properties for light manipulation.

Purpose of the Study:

  • To fabricate a highly multi-mode square core jacketed air-clad fiber.
  • To achieve a top-hat near-field intensity profile.
  • To demonstrate direct square ablation of materials using the fabricated fiber.

Main Methods:

  • Fabrication of a square core jacketed air-clad fiber.
  • Characterization of the fiber's near-field intensity profile.
  • Delivery of Q-switched laser pulses (1 µm wavelength) through the fiber.
  • Ablation of indium tin oxide (ITO) targets.

Main Results:

  • Successful fabrication of the multi-mode square core fiber.
  • Observation of a top-hat near-field intensity profile.
  • Production of square-shaped ablation marks in ITO.
  • Elimination of the need for complex beam-shaping optics during ablation.

Conclusions:

  • The novel square core fiber effectively produces a top-hat beam profile.
  • Direct laser ablation of square shapes in ITO is achievable with this fiber.
  • This simplifies laser processing systems by removing the need for external beam-shaping optics.