Generation of a high-average-power and millijoule-level pulses with a tabletop soft x-ray laser

Jorge J. G. Rocca; Brady R. Benware; Christopher D. Macchietto; Vyacheslav N. Shlyaptsev

doi:10.1117/12.366663

21 October 1999 Generation of a high-average-power and millijoule-level pulses with a tabletop soft x-ray laser

Jorge J. G. Rocca, Brady R. Benware, Christopher D. Macchietto, Vyacheslav N. Shlyaptsev

Proceedings Volume 3776, Soft X-Ray Lasers and Applications III; (1999) https://doi.org/10.1117/12.366663
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

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.

Citation Download Citation

Jorge J. G. Rocca, Brady R. Benware, Christopher D. Macchietto, and 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); https://doi.org/10.1117/12.366663

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