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Optical Engineering

Femtosecond laser-driven x-ray tube
Author(s): Andre Egbert; Boris N. Chichkov; Carsten Fallnich; S. Zimmermann; A. Reinhold
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Paper Abstract

A new "indirect" laser-driven ultrashort hard-x-ray source based on the combination of a high-repetition-rate femtosecond laser system with a conventional x-ray tube is demonstrated. By irradiation of a metal cathode with femtosecond laser pulses electron bunches are produced and accelerated toward a high-Z target material in a high voltage electric field. Hard x rays are generated via electron bremsstrahlung and characteristic line emission inside the target. The influence of laser parameters on thermionic electron emission and on the hard-x-ray generation efficiency is studied. A theoretical analysis and a comparison with available ultrashort hard-x-ray sources are given.

Paper Details

Date Published: 1 October 2002
PDF: 10 pages
Opt. Eng. 41(10) doi: 10.1117/1.1504459
Published in: Optical Engineering Volume 41, Issue 10
Show Author Affiliations
Andre Egbert, Laser Zentrum Hannover eV (Germany)
Boris N. Chichkov, Laser Zentrum Hannover eV (Germany)
Carsten Fallnich, Laser Zentrum Hannover eV (Germany)
S. Zimmermann, feinfocus Roentgen-Systeme GmbH (Germany)
A. Reinhold, feinfocus Roentgen-Systeme GmbH (Germany)


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