skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Two-color x-ray free-electron laser by photocathode laser emittance spoiler

Journal Article · · Physical Review Accelerators and Beams

Multispectral x-ray pump-probe experiments call for synchronized two-color free-electron lasers (FEL). This mode often implies a laborious setup or an inefficient use of the undulator. We report on a simple and noninvasive approach tested at SwissFEL for a two-color x-ray delivering almost 60% of the pulse energy compared with a single color. In this new method, a ps UV pulse is overlapped to the photocathode drive laser increasing the beam emittance, which locally inhibits the FEL process. This scheme permits high-stability in energy and spectrum and the control of the two-color duration and intensity ratio. It enables shot-to-shot switching between one and two-color FEL and, since not associate to beam losses, it is compatible with high repetition-rate and high average-power FELs.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1819833
Journal Information:
Physical Review Accelerators and Beams, Vol. 24, Issue 6; ISSN 2469-9888
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (29)

Linac Coherent Light Source: The first five years journal March 2016
Operation of a free-electron laser from the extreme ultraviolet to the water window journal June 2007
A compact X-ray free-electron laser emitting in the sub-ångström region journal June 2012
Fresh-slice multicolour X-ray free-electron lasers journal October 2016
Two-colour hard X-ray free-electron laser with wide tunability journal December 2013
Control of the Lasing Slice by Transverse Mismatch in an X-Ray Free-Electron Laser journal August 2018
First lasing and operation of an ångstrom-wavelength free-electron laser journal August 2010
The ultrafast X-ray spectroscopic revolution in chemical dynamics journal May 2018
Brightness, coherence and propagation characteristics of synchrotron radiation journal May 1986
Two-color beam generation based on wakefield excitation journal May 2016
Two-color operation of a free-electron laser with a tilted beam journal May 2016
Matching-based fresh-slice method for generating two-color x-ray free-electron lasers journal September 2017
Development of ultrafast capabilities for X-ray free-electron lasers at the linac coherent light source
  • Coffee, Ryan N.; Cryan, James P.; Duris, Joseph
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 377, Issue 2145 https://doi.org/10.1098/rsta.2018.0386
journal April 2019
Hard X-ray free-electron laser with femtosecond-scale timing jitter journal October 2017
Dispersion-Based Fresh-Slice Scheme for Free-Electron Lasers journal June 2018
SwissFEL: The Swiss X-ray Free Electron Laser journal July 2017
Experimental Demonstration of Femtosecond Two-Color X-Ray Free-Electron Lasers journal March 2013
Optical Shaping of X-Ray Free-Electron Lasers journal June 2016
SwissFEL Aramis beamline photon diagnostics journal June 2018
Femtosecond x-ray free electron laser pulse duration measurement from spectral correlation function journal March 2012
Highly coherent and stable pulses from the FERMI seeded free-electron laser in the extreme ultraviolet journal September 2012
Femtosecond all-optical synchronization of an X-ray free-electron laser journal January 2015
Nanoscale transient gratings excited and probed by extreme ultraviolet femtosecond pulses journal July 2019
Widely tunable two-colour seeded free-electron laser source for resonant-pump resonant-probe magnetic scattering journal January 2016
Generation of two-color x-ray free-electron-laser pulses from a beam with a large energy chirp and a slotted foil journal March 2019
High-intensity double-pulse X-ray free-electron laser journal March 2015
Opportunities for Two-Color Experiments in the Soft X-ray Regime at the European XFEL journal April 2020
Large-bandwidth two-color free-electron laser driven by a comb-like electron beam journal March 2014
Two-Color Soft X-Ray Lasing in a High-Density Nickel-like Krypton Plasma journal April 2020

Similar Records

LUX - a recirculating linac-based facility for ultrafast X-ray science
Conference · Tue Jun 29 00:00:00 EDT 2004 · OSTI ID:1819833

Sub-Picosecond Tunable Hard X-Ray Undulator Source for Laser/X-Ray Pump-Probe Experiments
Journal Article · Fri Jan 19 00:00:00 EST 2007 · AIP Conference Proceedings · OSTI ID:1819833

R&D for a Soft X-Ray Free Electron Laser Facility
Technical Report · Mon Jun 08 00:00:00 EDT 2009 · OSTI ID:1819833