Note: femtosecond laser micromachining of straight and linearly tapered capillary discharge waveguides

Mark Wiggins, Merijn Reijnders, Salima Saleh Abu-Azoum, Kerri Hart, Gregor H. Welsh, Riju Issac, David Jones, Dino Jaroszynski

Research output: Contribution to journalArticle

6 Citations (Scopus)
194 Downloads (Pure)

Abstract

Gas-filled capillary discharge waveguides are important structures in laser-plasma interaction applications, such as the laser wakefield accelerator. We present the methodology for applying femtosecond laser micromachining in the production of capillary channels (typically 200–300 μm in diameter and 30–40 mm in length), including the formalism for capillaries with a linearly tapered diameter. The latter is demonstrated to possess a smooth variation in diameter along the length of the capillary (tunable with the micromachining trajectories). This would lead to a longitudinal plasma density gradient in the waveguide that may dramatically improve the laser-plasma interaction efficiency in applications.
Original languageEnglish
Article number096104
Number of pages3
JournalReview of Scientific Instruments
Volume82
Issue number9
DOIs
Publication statusPublished - 21 Sep 2011

Keywords

  • high speed optical techniques
  • laser beam machining
  • plasma density
  • optical waveguides

Fingerprint Dive into the research topics of 'Note: femtosecond laser micromachining of straight and linearly tapered capillary discharge waveguides'. Together they form a unique fingerprint.

Cite this