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Controlling output gain uniformity by spatial variation of the X-ray preionization in a large-aperture discharge-pumped KrF amplifier

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1 Author(s)
M. S. Pronko ; Laser Phys. Branch, Naval Res. Lab., Washington, DC, USA

A technique for improving the output uniformity in fast-discharge large-aperture lasers is described. Spatial variation of the X-ray preionization flux is used to compensate for the discharge-plasma skin depth and nonuniformity in the initial electric-field distribution. The technique was demonstrated using a 4.25×4.25 cm clear-aperture KrF laser that produces 2.7 J in a 15 ns FWHM pulse

Published in:

IEEE Journal of Quantum Electronics  (Volume:30 ,  Issue: 9 )