Generation of Ultrashort Coherent Vacuum Ultraviolet Pulses Using Electron Storage Rings: A New Bright Light Source for Experiments

Ninno, G. De; Allaria, E.; Coreno, Marcello; Curbis, Francesca; Danailov, M. B.; Karantzoulis, E.; Locatelli, Andrea; Menteş, T. O.; Niño, Miguel Ángel; Spezzani, C.; Trovò, M.

doi:10.1103/physrevlett.101.053902

Cited by 58 publications

(25 citation statements)

References 21 publications

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“…By reducing the laser wavelength to 264 nm, intense ultrashort coherent radiation at 132 nm with peak brightness four orders of magnitude higher than the spontaneous radiation has been produced at Elettra (De Ninno et al, 2008). Recently, coherent emission down to 89 nm has also been observed at UVSOR with a 800 nm Ti:Sapphire laser (Labat et al, 2007;Tanikawa et al, 2010).…”

Section: Coherent Femtosecond Radiation In Synchrotronsmentioning

confidence: 80%

Beam by design: Laser manipulation of electrons in modern accelerators

et al. 2014

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Accelerator-based light sources such as storage rings and free-electron lasers use relativistic electron beams to produce intense radiation over a wide spectral range for fundamental research in physics, chemistry, materials science, biology and medicine. More than a dozen such sources operate worldwide, and new sources are being built to deliver radiation that meets with the ever increasing sophistication and depth of new research. Even so, conventional accelerator techniques often cannot keep pace with new demands and, thus, new approaches continue to emerge. In this article, we review a variety of recently developed and promising techniques that rely on lasers to manipulate and rearrange the electron distribution in order to tailor the properties of the radiation. Basic theories of electron-laser interactions, techniques to create micro-and nano-structures in electron beams, and techniques to produce radiation with customizable waveforms are reviewed. We overview laser-based techniques for the generation of fully coherent x-rays, mode-locked x-ray pulse trains, light with orbital angular momentum, and attosecond or even zeptosecond long coherent pulses in free-electron lasers. Several methods to generate femtosecond pulses in storage rings are also discussed. Additionally, we describe various schemes designed to enhance the performance of light sources through precision beam preparation including beam conditioning, laser heating, emittance exchange, and various laser-based diagnostics. Together these techniques represent a new emerging concept of "beam by design" in modern accelerators, which is the primary focus of this article CONTENTS

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Section: Coherent Femtosecond Radiation In Synchrotronsmentioning

confidence: 80%

Beam by design: Laser manipulation of electrons in modern accelerators

et al. 2014

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“…One of the most attractive features of seeded FELs, including those making use of HGHG, is the possibility of obtaining highly stable output spectra 16,21,41 . As already demonstrated in previous experiments 42 , the spectral properties of the pulses produced by an HGHG FEL are strongly related to the spectral properties of the seed laser.…”

Section: Resultsmentioning

confidence: 99%

“…Proposed in ref. 15, and demonstrated for low (≤5) harmonics on FELs based on linear accelerators 16-20 and storage rings 21,22 , this technique has been used to design and realize FERMI 23 , the first user facility based on HGHG. In this Article, we present a characterization of the light produced by the FERMI FEL-1.…”

mentioning

confidence: 99%

Highly coherent and stable pulses from the FERMI seeded free-electron laser in the extreme ultraviolet

Allaria¹,

Appio

Badano³

et al. 2012

Nature Photon

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933

585

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Free-electron lasers (FELs) are promising devices for generating light with laser-like properties in the extreme ultraviolet and X-ray spectral regions. Recently, FELs based on the self-amplified spontaneous emission (SASE) mechanism have allowed major breakthroughs in diffraction and spectroscopy applications, despite the relatively large shot-to-shot intensity and photon-energy fluctuations and the limited longitudinal coherence inherent in the SASE mechanism. Here, we report results on the initial performance of the FERMI seeded FEL, based on the high-gain harmonic generation configuration, in which an external laser is used to initiate the emission process. Emission from the FERMI FEL-1 source occurs in the form of pulses carrying energy of several tens of microjoules per pulse and tunable throughout the 65 to 20 nm wavelength range, with unprecedented shot-to-shot wavelength stability, low-intensity fluctuations, close to transform-limited bandwidth, transverse and longitudinal coherence and full control of polarization

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“…The use of harmonic generation to produce FEL pulses at short wavelength starting from an external seed laser at long wavelength was originally proposed in [7] and was then applied to high gain single pass FELs to generate IR [8] and VUV coherent emission [9]. In the past decade, HGHG has been demonstrated and studied in several FEL test facilities [10][11][12][13][14][15] down to the VUV spectral range. More recently, HGHG has been demonstrated to efficiently work down to the extreme ultraviolet [4].…”

Section: Introductionmentioning

confidence: 99%

Impact of radiator length in the emitted power for a high gain harmonic generation free-electron laser

Allaria

2013

Phys. Rev. ST Accel. Beams

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We present a numerical study that characterizes the dependence on the radiator length of the output power produced by a free-electron laser (FEL) operated in the high gain harmonic generation (HGHG) configuration. Using the main parameters of the FERMI@Elettra FEL, numerical simulations of the FEL process have been performed for different lengths of the radiator. Our results show that in the case of HGHG the achievable output power has a dependence on the radiator length that is linear. The impact of the electron beam parameters on the achievable maximum power vs radiator length dependence is also studied. A normalization of the results to the FEL saturation power and to the FEL gain length shows that this dependence can be expressed by a universal linear equation that, in some conditions, is independent on the electron beam current and brightness. The reported results could be useful for the design of future FELs based on the HGHG scheme and could be used for a quick estimate of the best undulator length.

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Generation of Ultrashort Coherent Vacuum Ultraviolet Pulses Using Electron Storage Rings: A New Bright Light Source for Experiments

Cited by 58 publications

References 21 publications

Beam by design: Laser manipulation of electrons in modern accelerators

Beam by design: Laser manipulation of electrons in modern accelerators

Highly coherent and stable pulses from the FERMI seeded free-electron laser in the extreme ultraviolet

Impact of radiator length in the emitted power for a high gain harmonic generation free-electron laser

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