Aberration-free laser beam in the soft x-ray range

作者：Goddet J Ph^*; Sebban S; Gautier J; Zeitoun Ph; Valentin C; Tissandier F; Marchenko T; Lambert G; Ribieres M; Douillet D; Lefrou T; Iaquaniello G; Burgy F; Maynard G; Cros B; Robillard B; Mocek T; Nejdl J; Kozlova M; Jakubczak K

来源：Optics Letters, 2009, 34(16): 2438-2440.

DOI：10.1364/ol.34.002438

By seeding an optical-field-ionized population-inverted plasma amplifier with the 25th harmonic of an IR laser, we have achieved what we believe to be the first aberration-free laser beam in the soft x-ray spectral range. This laser emits within a cone of 1.34 mrad (1/e(2)) at a repetition rate of 10 Hz at a central wavelength of 32.8 nm. The beam exhibits a circular profile and wavefront distortions as low as lambda/17. A theoretical analysis of these results shows that this high beam quality is due to spatial filtering of the seed beam by the plasma amplifier aperture.

• 出版日期2009-8-15