Attwood, D. T., authorRocca, Jorge J., authorChang, C., authorTomasel, F. G., authorSeminario, M., authorLiu, Y., authorAmerican Physical Society, publisher2007-01-032007-01-032001Liu, Y., et al., Achievement of Essentially Full Spatial Coherence in a High-Average-Power Soft-X-Ray Laser, Physical Review. A 63, no. 3 (September 2001): 033802-1-033802-5.http://hdl.handle.net/10217/67491We report an observation of essentially full spatial coherence in a high average power soft-x-ray laser. Rapid coherence buildup due to strong refractive antiguiding in a long plasma column is experimentally demonstrated. This allows the generation of fully coherent, milliwatt-level average power soft-x-ray radiation by a tabletop device. The peak brightness of this laser reaches 2×1025 photons s-1 mm-2 mrad-2 within 0.01% spectral bandwidth, making it one of the brightest soft-x-ray sources available.born digitalarticleseng©2001 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