Improved beam characteristics of solid-target son x-ray laser amplifiers by injection seeding with high harmonic pulses

Mark Berrill, David Alessi, Yong Wang, Scott R. Domingue, Dale H. Martz, Brad M. Luther, Yanwei Liu, Jorge J. Rocca

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

Injection seeding of solid-target soft x-ray laser amplifiers with high harmonic pulses is shown to dramatically improve the far-field laser beam profile and reduce the beam divergence. Measurements and two-dimensional simulations for a 13.9 nm nickel-like Ag amplifier show that the amplified beam divergence depends strongly on the seed and can therefore be controlled by selecting the divergence of the seed. The near-field beam size of both the seeded and unseeded lasers is shown to be determined by the size of the gain region and the divergence of the amplified beams.

Original languageEnglish
Pages (from-to)2317-2319
Number of pages3
JournalOptics Letters
Volume35
Issue number14
DOIs
StatePublished - Jul 15 2010
Externally publishedYes

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