Polarization control of an x-ray free electron laser oscillator

Huang, Nanshun; Li, Kai; Deng, Haixiao

doi:10.1103/physrevaccelbeams.23.030702

Cited by 7 publications

(4 citation statements)

References 50 publications

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“…Due to dispersion, the crystal only functions properly in a very narrow bandwidth from 10 −2 to 1 eV depending on the desired polarisation resolution/purification. And their emittance/acceptance angles are also limited around milliradians, which is a match to the character of the XFEL [91][92][93]. The polarized XFEL probe with over 10 10 photons also has a good capability to resist unpolarized noise.…”

Section: Further Discussionmentioning

confidence: 99%

“…In this article, we investigate the generation of ALP's flux in a three-wave mixing between the strong quasistatic electric background fields in plasma and a x-ray free-electron laser (XFEL) probe field [89][90][91][92][93]. The calculation is based on the 'aγγ' process that treats ALP field as a scattering material for light field and utilizes electromagnetic field as the source term in ALP's wave equation.…”

Section: Introductionmentioning

confidence: 99%

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Axion-like particle generation in laser-plasma interaction

Huang¹,

Shen²,

Bu³

et al. 2022

Phys. Scr.

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The hypothetical axion and axion-like particles, feebly coupled with photon, have not yet been found in any experiment. With the improvement of laser technique, much stronger quasi-static electric and magnetic fields can be created in laboratory using laser-plasma interaction and help the search of axion. In this article, we discuss the feasibility of ALPs exploration using planarly or cylindrically symmetric laser-plasma fields as the background and an x-ray free-electron laser as the probe. Compared to the fields by large magnets, the laser-plasma fields provide much stronger but shorter interaction. Both the probe and the background fields are polarized such that the existence of ALPs in the corresponding parameter space will cause polarization rotation of the probe, which can be detected with high accuracy. Besides, a structured field in the plasma creates a tunable transverse profile for the interaction and improves the signal-noise ratio via phase-matching mechanism. The ALP mass discussed in this article ranges from 10−3 eV to 1 keV. Some simple schemes and estimations on ALP production and polarization rotation of probe photon are given, which reveals the possibility of future laser-plasma ALP source in laboratory.

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Section: Further Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Axion-like particle generation in laser-plasma interaction

Huang¹,

Shen²,

Bu³

et al. 2022

Phys. Scr.

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“…Furthermore, by utilizing a crossed-planar undulator, an XFELO can generate polarization-controllable fully coherent hard X-ray pulses, with a polarization degree of 99% and a polarization switching rate of 20 kHz. 81 This scheme consists of two cross-configured planar undulators in which two orthogonally linearly polarized field components are generated separately. By inserting a fast phase shifter between the two undulators, the phase difference between the two linearly polarized components can be controlled.…”

Section: Principles and Properties Of Xfelsmentioning

confidence: 99%

Features and futures of X-ray free-electron lasers

et al. 2021

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X-ray free-electron lasers (XFELs) generate X-ray by electrons flying through a periodic magnetic field.-XFELs are the leading X-ray sources with ultra-high brightness and ultra-short duration.-XFELs can be launched from either the shot noise of the electron beam or the seed.-XFEL-laser collision is proposed to learn the nature of vacuum at SHINE.-XFELs are being combined with intense lasers and synchrotron radiation light sources.

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“…Being fully coherent and offering controlled polarization [1][2][3][4], the x-ray free electron laser (XFEL) is at the heart of advanced techniques in fields such as materials science and surface physics. Currently, several XFELs machines have been constructed or are in operation [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Numerical study of transverse position monitor and compensation for x-ray polarization diagnosis

Liu,

Deng,

Deng

et al. 2021

Preprint

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Diagnosing free electron laser (FEL) polarization is critical for polarization-modulated research such as x-ray free electron laser (XFEL) diffraction imaging and probing material magnetism. In an electron time-of-flight (eTOF) polarimeter, the flight time and angular distribution of photoelectrons were designed based on x-ray polarimetry for on-site diagnosis. However, the transverse position of x-ray FEL pulses introduces error into the measured photoelectron angular distribution. This work thus proposes a method to monitor the transverse position using an eTOF polarimeter and explains how to compensate for the error due to transverse position. A comprehensive numerical model is developed to demonstrate the feasibility of the compensation method, and the results reveal that a spatial resolution of 20 µm and a polarity improved by 0.5% is possible with fully polarized FEL pulses. The impact of FEL pulses and a method to calibrate their linearity is also discussed.

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Polarization control of an x-ray free electron laser oscillator

Cited by 7 publications

References 50 publications

Axion-like particle generation in laser-plasma interaction

Axion-like particle generation in laser-plasma interaction

Features and futures of X-ray free-electron lasers

Numerical study of transverse position monitor and compensation for x-ray polarization diagnosis

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