Analogical optical modeling of the asymmetric lateral coherence of betatron radiation

Paroli, B.; Chiadroni, E.; Ferrario, M.; Potenza, M. A. C.

doi:10.1364/oe.23.029912

Cited by 14 publications

(10 citation statements)

References 10 publications

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“…A peculiar behaviour of the coherence due to the different emissions of particles at different radii was recently demonstrated [112][113][114]. Multiple oscillations on the modulus of the coherence factor depending on the transverse non-uniformity of emission can be observed using an asymmetric detection method.…”

Section: Coherencementioning

confidence: 95%

“…The synchrotron-like emission can be used to estimate the spatio-temporal coherence in the framework of the theory exposed in Section 2.1 using the osculation circle approximation [112][113][114]. This method can be applied for small oscillations and for small angles of observation in such a way the observer sees only the radiation coming from the maximum of the betatron oscillations as sketched in Figure 10.…”

Section: Coherencementioning

confidence: 99%

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Radiation emission processes and properties: synchrotron, undulator and betatron radiation

Paroli

Potenza

2017

Advances in Physics: X

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Synchrotron, undulator and betatron radiations are generated from last generation and novel concept sources. The achievement of unprecedented radiation properties opens new opportunities in various research fields as well as novel potential applications. In particular, bright coherent X-rays and γ -rays have been recently obtained thanks to enormous efforts in technological advancements and research activities. We give in this work a uniform argumentation and comparison of the main fundamental emission processes and radiation properties of synchrotron, undulator and betatron radiations. Emphasis is given to spatial coherence and related diagnostics, a fundamental property for any 'modern light source' and a basis for recent important advancements. ARTICLE HISTORY

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Section: Coherencementioning

confidence: 95%

Section: Coherencementioning

confidence: 99%

Radiation emission processes and properties: synchrotron, undulator and betatron radiation

Paroli

Potenza

2017

Advances in Physics: X

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“…The technique we use to prove the ITICS is based on scanning interferometry of a double-slits array [26][27][28][29][30][31] however, other techniques able to measure the local curvature of the wavefront can be adopted to this aim, such as Hartmann-type wavefront sensors. The optical layout is schematically shown in Fig.…”

Section: Itics Measurement With Scanning Interferometrymentioning

confidence: 99%

The local intrinsic curvature of wavefronts allows to detect optical vortices

Paroli¹,

Siano²,

Potenza³

2019

Opt. Express

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We describe a method for effectively distinguishing the radiation endowed with optical angular momentum, also known as optical vortex, from ordinary light. We show that by detecting the inversion of the transverse intrinsic curvature sign (ITICS) an optical vortex can be locally recognized. The method is effective under conditions of huge importance for the exploitation of optical vortices, such as the far field of the source and access to a small fraction of the wavefront only. The validity of the method has been verified with table-top experiments with visible light, and the results show that a measurement performed over a transverse distance smaller than 4% of the beam diameter distinguishes a vortex from a Gaussian beam with a significance of 93.4%. New perspectives are considered for the characterization of vortices, with potential impact on the detection of extra-terrestrial radiation as well as on broadcast communication techniques.

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“…The asymmetric lateral coherence technique has been recently reported to provide one-dimensional [12][13][14][15][16] and 2-dimensional [17,18] mapping of the real part of the complex degree of coherence Reγ c along linear paths. It is based on a scanning interferometry scheme that exploits an array of double-slits with different spacing Δx controlled by a 2-axis linear stage synchronized with a tracking charge couple device (CCD).…”

Section: Asymmetric Lateral Coherence Technique In Single-shotmentioning

confidence: 99%

Single-shot measurement of phase and topological properties of orbital angular momentum radiation through asymmetric lateral coherence

Paroli

Siano

Teruzzi

et al. 2019

Phys. Rev. Accel. Beams

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We show a single-shot technique to measure topological and phase properties of radiation carrying orbital angular momentum. The single-shot method is effectively described as the one-dimensional case of a more general two-dimensional approach based on scanning interferometry (asymmetric lateral coherence). The validity of the method has been experimentally verified and the applicability to ultrarelativistic sources of hard x-rays has been discussed. The method is suitable to characterize phase and topological properties of x-ray sources by using simple apertures.

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Analogical optical modeling of the asymmetric lateral coherence of betatron radiation

Cited by 14 publications

References 10 publications

Radiation emission processes and properties: synchrotron, undulator and betatron radiation

Radiation emission processes and properties: synchrotron, undulator and betatron radiation

The local intrinsic curvature of wavefronts allows to detect optical vortices

Single-shot measurement of phase and topological properties of orbital angular momentum radiation through asymmetric lateral coherence

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