Tapered capillaries applied in laser wakefield acceleration
- Wiggins, S. Mark
- Abuazoum, Salima
- Vieux, Gregory
- Welsh, Gregor H.
- Issac, Riju C.
- Islam, M. Ranaul
- Ersfeld, Bernhard
- Brunetti, Enrico
- Cipiccia, Silvia
- Grant, David W.
- Jaroszynski, Dino A.
Publication date
January 2012
DOI Publisher
Institute of Electrical and Electronics Engineers (IEEE)Abstract
This paper presents realisation of linearly tapered capillary discharge waveguides (CDWs), manufactured using a femtosecond laser micromachining technique. Waveguiding of a low power, 50 fs duration laser pulse is demonstrated and, despite a slight mismatch of the laser focal spot size with respect to the capillary entrance size, efficient guiding of the Gaussian-shaped laser pulse is obtained. Energy transmission of 80% is obtained for optimal delay of the laser pulse arrival time with respect to the discharge current pulse
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