Benware, B. R., authorMoreno, C. H., authorMacchietto, C. D., authorRocca, Jorge J., authorAmerican Physical Society, publisher2007-01-032007-01-031998Benware, B. R., et al., Demonstration of a High Average Power Tabletop Soft X-Ray Laser, Physical Review Letters 81, no. 26 (December 28, 1998): 5804-5807.http://hdl.handle.net/10217/67594We report the first demonstration of a high average power tabletop soft x-ray laser. An average laser output power of ≈1 mW (>2 × 1014 photons/s) was generated at 46.9 nm in Ne-like Ar using a very compact tabletop discharge. 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 (Δλ/λ = 10-4) by a third generation synchrotron beam line. Lasing was obtained at a repetition rate of 7 Hz with an average output energy of 135 μJ/pulse by exciting a plasma column in a ceramic capillary with a fast current pulse. This very compact high-repetition-rate laser source makes intense short-wavelength coherent radiation accessible to a wide variety of new applications.born digitalarticleseng©1998 American Physical Society.Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.Text