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  • CLEO/Europe and EQEC 2011 Conference Digest
  • OSA Technical Digest (CD) (Optica Publishing Group, 2011),
  • paper CG4_3

Seeding of extreme ultraviolet free electron laser with high-order harmonic

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Abstract

Frontiers in optical science in the short-wavelength region have greatly been expanded by the advent of intense, single-pass free-electron lasers (FELs) based on a self-amplified spontaneous emission (SASE) scheme [1,2]. However, their temporal profile and frequency-domain spectra are composed of random and uncontrollable spikes, exhibiting shot-to-shot fluctuation originating from the stochastic start-up process intrinsic to spontaneous radiation. The most straightforward method for improving the temporal coherence of FEL is to inject the high-order harmonic (HH) generated by a laser into an FEL amplifier. In this paper, we first demonstrate [3] the 13th harmonic (61 nm) [4] of a Ti:Sapphire laser in the plateau region was injected as the SPring-8 Compact SASE Source test accelerator [2].

© 2011 Optical Society of America

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