21 October 1999 Generation of a high-average-power and millijoule-level pulses with a tabletop soft x-ray laser
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Abstract
Millijoule-level laser pulses and multi-milliwatt average power have been obtained for the first time from a table-top soft x-ray laser. Laser pulses with energy up to 1 mJ and an average power of approximately equals 3.5 mW were generated at a wavelength of 46.9 nm by single pass amplification in a 34.5 cm long Ne-like Ar capillary discharge plasma. The large gain-length product of this plasma column allows for soft x-ray amplification in a highly saturated regime, resulting in very efficient energy extraction. An average laser output pulse energy of 0.88 mJ and peak power of 0.6 MW were obtained at a repetition rate of 4 Hz. The spatially coherent average power emitted by this 26.5 eV laser is comparable to that generated at this photon energy in a similar bandwidth ((Delta) (lambda) /(lambda) equals 10-4) by a third-generation synchrotron beam-line, which its peak spatially coherent power exceeds that of the undulator by several orders of magnitude. With an estimated peak spectral brightness of approximately equals 1 X 1023 photons/(s mm2 mrad2 0.01% bandwidth) this table-top laser is one of the brightest soft x-ray sources to date.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jorge J. G. Rocca, Jorge J. G. Rocca, Brady R. Benware, Brady R. Benware, Christopher D. Macchietto, Christopher D. Macchietto, Vyacheslav N. Shlyaptsev, Vyacheslav N. Shlyaptsev, } "Generation of a high-average-power and millijoule-level pulses with a tabletop soft x-ray laser", Proc. SPIE 3776, Soft X-Ray Lasers and Applications III, (21 October 1999); doi: 10.1117/12.366663; https://doi.org/10.1117/12.366663
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