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Title: Echo-Enabled Harmonic Generation Studies for the FERMI Free-Electron Laser

Journal Article · · Photonics
 [1];  [1];  [2];  [3];  [1];  [1];  [1]
  1. Elettra-Sincrotrone Trieste, Trieste (Italy)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Elettra-Sincrotrone Trieste, Trieste (Italy); Univ. of Nova Gorica, Nova Gorica (Slovenia)

Studying ultrafast processes on the nanoscale with element specificity requires a powerful femtosecond source of tunable extreme-ultraviolet (XUV) or x-ray radiation, such as a free-electron laser (FEL). Current efforts in FEL development are aimed at improving the wavelength tunability and multicolor operation, which will potentially lead to the development of new characterization techniques offering a higher chemical sensitivity and improved spatial resolution. One of the most promising approaches is the echo-enabled harmonic generation (EEHG), where two external seed lasers are used to precisely control the spectro-temporal properties of the FEL pulse. Here, we study the expected performance of EEHG at the FERMI FEL, using numerical simulations. We show that, by employing the existing FERMI layout with minor modifications, the EEHG scheme will be able to produce gigawatt peak-power pulses at wavelengths as short as 5 nm. We discuss some possible detrimental effects that may affect the performance of EEHG and compare the results to the existing double-stage FEL cascade, currently in operation at FERMI. Finally, our simulations show that, after substantial machine upgrades, EEHG has the potential to deliver coherent multicolor pulses reaching wavelengths as short as 3 nm, enabling x-ray pump-x-ray probe experiments in the water window.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1506273
Journal Information:
Photonics, Journal Name: Photonics Journal Issue: 4 Vol. 4; ISSN 2304-6732
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English

References (47)

Collective instabilities and high-gain regime in a free electron laser journal July 1984
Start-to-end simulation of self-amplified spontaneous emission free electron lasers from the gun through the undulator
  • Borland, M.; Chae, Y. C.; Emma, P.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 483, Issue 1-2 https://doi.org/10.1016/S0168-9002(02)00325-X
journal May 2002
Klystron instability of a relativistic electron beam in a bunch compressor
  • Saldin, E. L.; Schneidmiller, E. A.; Yurkov, M. V.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 490, Issue 1-2 https://doi.org/10.1016/S0168-9002(02)00905-1
journal September 2002
High-gain harmonic generation of soft X-rays with the “fresh bunch” technique journal July 1997
GENESIS 1.3: a fully 3D time-dependent FEL simulation code journal June 1999
Longitudinal space charge-driven microbunching instability in the TESLA Test Facility linac
  • Saldin, E. L.; Schneidmiller, E. A.; Yurkov, M. V.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 528, Issue 1-2 https://doi.org/10.1016/j.nima.2004.04.067
journal August 2004
Single mimivirus particles intercepted and imaged with an X-ray laser journal February 2011
Femtosecond X-ray protein nanocrystallography journal February 2011
Four-wave mixing experiments with extreme ultraviolet transient gratings journal April 2015
Widely tunable two-colour seeded free-electron laser source for resonant-pump resonant-probe magnetic scattering journal January 2016
Two-colour pump–probe experiments with a twin-pulse-seed extreme ultraviolet free-electron laser journal September 2013
Two-colour hard X-ray free-electron laser with wide tunability journal December 2013
High-intensity double-pulse X-ray free-electron laser journal March 2015
Single-shot spectro-temporal characterization of XUV pulses from a seeded free-electron laser journal August 2015
Operation of a free-electron laser from the extreme ultraviolet to the water window journal June 2007
First lasing and operation of an ångstrom-wavelength free-electron laser journal August 2010
First lasing of an echo-enabled harmonic generation free-electron laser journal May 2012
A compact X-ray free-electron laser emitting in the sub-ångström region journal June 2012
Demonstration of self-seeding in a hard-X-ray free-electron laser journal August 2012
Highly coherent and stable pulses from the FERMI seeded free-electron laser in the extreme ultraviolet journal September 2012
Two-stage seeded soft-X-ray free-electron laser journal October 2013
Echo-enabled harmonics up to the 75th order from precisely tailored electron beams journal June 2016
Coherent control with a short-wavelength free-electron laser journal February 2016
Fresh-slice multicolour X-ray free-electron lasers journal October 2016
Femtosecond diffractive imaging with a soft-X-ray free-electron laser journal November 2006
Injection of harmonics generated in gas in a free-electron laser providing intense and coherent extreme-ultraviolet light journal March 2008
Double-core-hole spectroscopy for chemical analysis with an intense X-ray femtosecond laser journal October 2011
Status and prospects of x-ray free-electron lasers (X-FELs): a simple presentation journal May 2012
Generation of intense uv radiation by subharmonically seeded single-pass free-electron lasers journal October 1991
Microbunching-instability-induced sidebands in a seeded free-electron laser journal May 2016
Using the Beam-Echo Effect for Generation of Short-Wavelength Radiation journal February 2009
Chirped Seeded Free-Electron Lasers: Self-Standing Light Sources for Two-Color Pump-Probe Experiments journal February 2013
Generation of Coherent 19- and 38-nm Radiation at a Free-Electron Laser Directly Seeded at 38 nm journal September 2013
Generation of Coherent Extreme-Ultraviolet Radiation Carrying Orbital Angular Momentum journal May 2014
Experimental Demonstration of a Soft X-Ray Self-Seeded Free-Electron Laser journal February 2015
Spectrotemporal Shaping of Seeded Free-Electron Laser Pulses journal September 2015
Multicolor High-Gain Free-Electron Laser Driven by Seeded Microbunching Instability journal November 2015
Generation of Phase-Locked Pulses from a Seeded Free-Electron Laser journal January 2016
Review of x-ray free-electron laser theory journal March 2007
Modeling of the microbunching instability journal March 2008
Echo-enabled harmonic generation free electron laser journal March 2009
Laser phase errors in seeded free electron lasers journal March 2012
Bunching coefficients in echo-enabled harmonic generation journal July 2013
Highly coherent vacuum ultraviolet radiation at the 15th harmonic with echo-enabled harmonic generation technique journal July 2014
Stable, coherent free-electron laser pulses using echo-enabled harmonic generation journal November 2014
Laser heater commissioning at an externally seeded free-electron laser journal December 2014
Extreme ultraviolet free electron laser seeded with high-order
harmonic of Ti:sapphire laser journal December 2010

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