Straight and linearly tapered capillaries produced by femtosecond laser micromachining

Mark Wiggins, M. P. Reijnders, Salima Saleh Abu-Azoum, Kerri Hart, Gregory Vieux, Gregor H. Welsh, Riju Issac, Xue Yang, David Jones, Dino Jaroszynski

Research output: Contribution to journalSpecial issue

2 Citations (Scopus)

Abstract

Gas-filled capillary discharge waveguides are a commonly employed medium in laser–plasma interaction applications, such as the laser wakefield accelerator, because they can simultaneously guide high-power laser pulses while acting as the medium for acceleration. In this paper, the production of both straight and linearly tapered capillaries using a femtosecond laser micromachining technique is presented. A tapered capillary is shown to possess a smooth variation in diameter (from 305 μm to 183 μm) along its entire 40 mm length, which would lead to a longitudinal plasma density gradient, thereby dramatically improving the laser–plasma interaction efficiency in applications. Efficient guiding with up to 82% energy transmission of the fundamental Gaussian mode of a low intensity, 50 fs duration laser pulse is shown for both types of capillary waveguide.
LanguageEnglish
Pages355-361
Number of pages6
JournalJournal of Plasma Physics
Volume78
Issue numberspecial issue 4
Early online date2 Feb 2012
DOIs
Publication statusPublished - 2012

Fingerprint

laser machining
laser plasma interactions
waveguides
pulses
high power lasers
plasma density
lasers
accelerators
gradients
gases
energy

Keywords

  • straight
  • linearly tapered
  • capilliaries
  • femtosecond laser
  • micromachining

Cite this

Wiggins, Mark ; Reijnders, M. P. ; Abu-Azoum, Salima Saleh ; Hart, Kerri ; Vieux, Gregory ; Welsh, Gregor H. ; Issac, Riju ; Yang, Xue ; Jones, David ; Jaroszynski, Dino. / Straight and linearly tapered capillaries produced by femtosecond laser micromachining. In: Journal of Plasma Physics. 2012 ; Vol. 78, No. special issue 4. pp. 355-361.
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title = "Straight and linearly tapered capillaries produced by femtosecond laser micromachining",
abstract = "Gas-filled capillary discharge waveguides are a commonly employed medium in laser–plasma interaction applications, such as the laser wakefield accelerator, because they can simultaneously guide high-power laser pulses while acting as the medium for acceleration. In this paper, the production of both straight and linearly tapered capillaries using a femtosecond laser micromachining technique is presented. A tapered capillary is shown to possess a smooth variation in diameter (from 305 μm to 183 μm) along its entire 40 mm length, which would lead to a longitudinal plasma density gradient, thereby dramatically improving the laser–plasma interaction efficiency in applications. Efficient guiding with up to 82{\%} energy transmission of the fundamental Gaussian mode of a low intensity, 50 fs duration laser pulse is shown for both types of capillary waveguide.",
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author = "Mark Wiggins and Reijnders, {M. P.} and Abu-Azoum, {Salima Saleh} and Kerri Hart and Gregory Vieux and Welsh, {Gregor H.} and Riju Issac and Xue Yang and David Jones and Dino Jaroszynski",
year = "2012",
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Straight and linearly tapered capillaries produced by femtosecond laser micromachining. / Wiggins, Mark; Reijnders, M. P.; Abu-Azoum, Salima Saleh; Hart, Kerri; Vieux, Gregory; Welsh, Gregor H.; Issac, Riju; Yang, Xue; Jones, David; Jaroszynski, Dino.

In: Journal of Plasma Physics, Vol. 78, No. special issue 4, 2012, p. 355-361.

Research output: Contribution to journalSpecial issue

TY - JOUR

T1 - Straight and linearly tapered capillaries produced by femtosecond laser micromachining

AU - Wiggins, Mark

AU - Reijnders, M. P.

AU - Abu-Azoum, Salima Saleh

AU - Hart, Kerri

AU - Vieux, Gregory

AU - Welsh, Gregor H.

AU - Issac, Riju

AU - Yang, Xue

AU - Jones, David

AU - Jaroszynski, Dino

PY - 2012

Y1 - 2012

N2 - Gas-filled capillary discharge waveguides are a commonly employed medium in laser–plasma interaction applications, such as the laser wakefield accelerator, because they can simultaneously guide high-power laser pulses while acting as the medium for acceleration. In this paper, the production of both straight and linearly tapered capillaries using a femtosecond laser micromachining technique is presented. A tapered capillary is shown to possess a smooth variation in diameter (from 305 μm to 183 μm) along its entire 40 mm length, which would lead to a longitudinal plasma density gradient, thereby dramatically improving the laser–plasma interaction efficiency in applications. Efficient guiding with up to 82% energy transmission of the fundamental Gaussian mode of a low intensity, 50 fs duration laser pulse is shown for both types of capillary waveguide.

AB - Gas-filled capillary discharge waveguides are a commonly employed medium in laser–plasma interaction applications, such as the laser wakefield accelerator, because they can simultaneously guide high-power laser pulses while acting as the medium for acceleration. In this paper, the production of both straight and linearly tapered capillaries using a femtosecond laser micromachining technique is presented. A tapered capillary is shown to possess a smooth variation in diameter (from 305 μm to 183 μm) along its entire 40 mm length, which would lead to a longitudinal plasma density gradient, thereby dramatically improving the laser–plasma interaction efficiency in applications. Efficient guiding with up to 82% energy transmission of the fundamental Gaussian mode of a low intensity, 50 fs duration laser pulse is shown for both types of capillary waveguide.

KW - straight

KW - linearly tapered

KW - capilliaries

KW - femtosecond laser

KW - micromachining

U2 - 10.1017/S0022377812000062

DO - 10.1017/S0022377812000062

M3 - Special issue

VL - 78

SP - 355

EP - 361

JO - Journal of Plasma Physics

T2 - Journal of Plasma Physics

JF - Journal of Plasma Physics

SN - 0022-3778

IS - special issue 4

ER -