Note: femtosecond laser micromachining of straight and linearly tapered capillary discharge waveguides.
| Autor: | Wiggins SM; Scottish Universities Physics Alliance, Department of Physics, University of Strathclyde, Glasgow G4 0NG, United Kingdom. mark.wiggins@strath.ac.uk, Reijnders MP, Abuazoum S, Hart K, Welsh GH, Issac RC, Jones DR, Jaroszynski DA |
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| Jazyk: | angličtina |
| Zdroj: | The Review of scientific instruments [Rev Sci Instrum] 2011 Sep; Vol. 82 (9), pp. 096104. |
| DOI: | 10.1063/1.3640410 |
| Abstrakt: | 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. (© 2011 American Institute of Physics) |
| Databáze: | MEDLINE |
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