Li, Lu, authorWang, Yong, authorWang, Shoujun, authorOliva, Eduardo, authorYin, Liang, authorLe, T. T. Thuy, authorDaboussi, Sameh, authorRos, David, authorMaynard, Gilles, authorSebban, Stephane, authorHu, Bitao, authorRocca, Jorge J, authorZeitoun, Philippe, authorOptical Society of America, publisher2020-04-282020-04-282013-10-15Lu Li, Yong Wang, Shoujun Wang, Eduardo Oliva, Liang Yin, T. T. Thuy Le, Sameh Daboussi, David Ros, Gilles Maynard, Stephane Sebban, Bitao Hu, Jorge J. Rocca, and Philippe Zeitoun, "Wavefront improvement in an injection-seeded soft x-ray laser based on a solid-target plasma amplifier," Opt. Lett. 38, 4011-4014 (2013). https://doi.org/10.1364/OL.38.004011https://hdl.handle.net/10217/206012The wavefront of an injection-seeded soft x-ray laser beam generated by amplification of high-harmonic pulses in a λ=18.9 nm molybdenum plasma amplifier was measured by a Hartmann wavefront sensor with an accuracy of λ/32 root mean square (rms). A significant improvement in wavefront aberrations of 0.51±0.03λ rms to 0.23±0.01λ rms was observed as a function of plasma column length. The variation of wavefront characteristic as a function time delay between the injection of the seed and peak of soft x-ray amplifier pump was studied. The measurements were used to reconstruct the soft x-ray source and confirm its high peak brightness.born digitalarticleseng©2013 Optical Society of America. Under the terms of the OSA Open Access Publishing Agreement. Biomedical Optics Express, Optica, Optical Materials Express, Optics Express, and OSA Continuum are all gold open access journals. As a result of the authors paying an article processing charge (APC), all content published in these journals is freely available.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.hard x rayslaser beamssoft x rayswavefront aberrationswavefront distortionsx ray lasersWavefront improvement in an injection-seeded soft x-ray laser based on a solid-target plasma amplifierTexthttps://doi.org/10.1364/OL.38.004011