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Title: Highly coherent vacuum ultraviolet radiation at the 15th harmonic with echo-enabled harmonic generation technique

Authors:
; ; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1180690
Grant/Contract Number:
AC02-76SF00515
Resource Type:
Journal Article: Published Article
Journal Name:
Physical Review Special Topics - Accelerators and Beams
Additional Journal Information:
Journal Volume: 17; Journal Issue: 7; Journal ID: ISSN 1098-4402
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Hemsing, E., Dunning, M., Hast, C., Raubenheimer, T. O., Weathersby, S., and Xiang, D. Highly coherent vacuum ultraviolet radiation at the 15th harmonic with echo-enabled harmonic generation technique. United States: N. p., 2014. Web. doi:10.1103/PhysRevSTAB.17.070702.
Hemsing, E., Dunning, M., Hast, C., Raubenheimer, T. O., Weathersby, S., & Xiang, D. Highly coherent vacuum ultraviolet radiation at the 15th harmonic with echo-enabled harmonic generation technique. United States. doi:10.1103/PhysRevSTAB.17.070702.
Hemsing, E., Dunning, M., Hast, C., Raubenheimer, T. O., Weathersby, S., and Xiang, D. Mon . "Highly coherent vacuum ultraviolet radiation at the 15th harmonic with echo-enabled harmonic generation technique". United States. doi:10.1103/PhysRevSTAB.17.070702.
@article{osti_1180690,
title = {Highly coherent vacuum ultraviolet radiation at the 15th harmonic with echo-enabled harmonic generation technique},
author = {Hemsing, E. and Dunning, M. and Hast, C. and Raubenheimer, T. O. and Weathersby, S. and Xiang, D.},
abstractNote = {},
doi = {10.1103/PhysRevSTAB.17.070702},
journal = {Physical Review Special Topics - Accelerators and Beams},
number = 7,
volume = 17,
place = {United States},
year = {Mon Jul 21 00:00:00 EDT 2014},
month = {Mon Jul 21 00:00:00 EDT 2014}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevSTAB.17.070702

Citation Metrics:
Cited by: 17works
Citation information provided by
Web of Science

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  • We report the first experimental demonstration of the echo-enabled harmonic generation (EEHG) technique which holds great promise for generation of high power, fully coherent short-wavelength radiation. In this experiment, coherent radiation at the 3rd and 4th harmonic of the second seed laser is generated from the so-called beam echo effect. The experiment confirms the physics behind this technique and paves the way for applying the EEHG technique for seeded x-ray free electron lasers.
  • We report the first experimental demonstration of the echo-enabled harmonic generation technique, which holds great promise for generation of high-power, fully coherent short-wavelength radiation. In this experiment, coherent radiation at the 3rd and 4th harmonics of the second seed laser is generated from the so-called beam echo effect. The experiment confirms the physics behind this technique and paves the way for applying the echo-enabled harmonic generation technique for seeded x-ray free electron lasers.
  • In this paper, we systematically study the echo-enabled harmonic generation (EEHG) free electron laser (FEL). The EEHG FEL uses two modulators in combination with two dispersion sections that allow to generate in the beam a high harmonic density modulation starting with a relatively small initial energy modulation of the beam. After presenting analytical theory of the phenomenon, we address several practically important issues, such as the effect of incoherent synchrotron radiation in the dispersion sections, and the beam transverse size effect in the modulator. Using a representative realistic set of beam parameters, we show how the EEHG scheme enhances themore » FEL performance and allows to generate a fully (both longitudinally and transversely) coherent radiation. As an example, we demonstrate that 5 nm coherent soft x-rays with GW peak power can be generated directly from the 240 nm seeding laser using the proposed EEHG scheme.« less
  • Echo-enabled harmonic generation free electron lasers hold great promise for the generation of fully coherent radiation in x-ray wavelengths. Here we report the first evidence of high harmonics from the echo-enabled harmonic generation technique in the realistic scenario where the laser energy modulation is comparable to the beam slice energy spread. In this experiment, coherent radiation at the seventh harmonic of the second seed laser is generated when the energy modulation amplitude is about 2-3 times the slice energy spread. The experiment confirms the underlying physics of echo-enabled harmonic generation and may have a strong impact on emerging seeded x-raymore » free electron lasers that are capable of generating laserlike x rays which will advance many areas of science.« less