Model-independent inference of laser intensity

Blackburn, Tom; Gerstmayr, E.; Mangles, S. P. D.; Marklund, Mattias

doi:10.1103/physrevaccelbeams.23.064001

Cited by 17 publications

(13 citation statements)

References 41 publications

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“…As Equation (16) shows, the FWHM of the laser pulse has no direct relation with the laser transmission process and target surface characteristics.…”

Section: Methods Of Intensity Recordingmentioning

confidence: 99%

“…In recent years, several studies have shown that LiDAR intensity data have strong application potential in several scientific areas, e.g., target recognition [12], remote sensing parameter inversion [13], and plant monitoring [14,15]. Blackburn et al [16] measured the peak value as the intensity of the laser pulse and inferred that it is independent of the model of the electron dynamics. Nilson et al [17] demonstrated that the pulse width is a function of laser intensity.…”

Section: Introductionmentioning

confidence: 99%

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Distance–Intensity Image Strategy for Pulsed LiDAR Based on the Double-Scale Intensity-Weighted Centroid Algorithm

Yan

Yang

et al. 2021

Remote Sensing

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We report on a self-adaptive waveform centroid algorithm that combines the selection of double-scale data and the intensity-weighted (DSIW) method for accurate LiDAR distance–intensity imaging. A time window is set to adaptively select the effective data. At the same time, the intensity-weighted method can reduce the influence of sharp noise on the calculation. The horizontal and vertical coordinates of the centroid point obtained by the proposed algorithm are utilized to record the distance and echo intensity information, respectively. The proposed algorithm was experimentally tested, achieving an average ranging error of less than 0.3 ns under the various noise conditions in the listed tests, thus exerting better precision compared to the digital constant fraction discriminator (DCFD) algorithm, peak (PK) algorithm, Gauss fitting (GF) algorithm, and traditional waveform centroid (TC) algorithm. Furthermore, the proposed algorithm is fairly robust, with remarkably successful ranging rates of above 97% in all tests in this paper. Furthermore, the laser echo intensity measured by the proposed algorithm was proved to be robust to noise and to work in accordance with the transmission characteristics of LiDAR. Finally, we provide a distance–intensity point cloud image calibrated by our algorithm. The empirical findings in this study provide a new understanding of using LiDAR to draw multi-dimensional point cloud images.

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“…As Equation (16) shows, the FWHM of the laser pulse has no direct relation with the laser transmission process and target surface characteristics.…”

Section: Methods Of Intensity Recordingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Distance–Intensity Image Strategy for Pulsed LiDAR Based on the Double-Scale Intensity-Weighted Centroid Algorithm

Yan

Yang

et al. 2021

Remote Sensing

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“…Besides the energy spectra of the non-linear Compton photons discussed above, also their angular distribution contains valuable information. A measurement of these Compton beam profiles open an additional possibility to infer the value of ξ in the non-linear Compton interaction [189][190][191].…”

Section: Compton Beam Profilesmentioning

confidence: 99%

“…For linearly polarised lasers one expects an elliptic Compton profile with a large eccentricity in the polarisation direction. The widening of the radiation cone can be most easily understood within the LCFA, where it is explained by the wiggling of the electrons in the laser field with an angle ϑ(φ) = (ξ sin φ)/γ [191]. This phenomenon is similar to magnetic wigglers, where the wiggler parameter K > 1.…”

Section: Compton Beam Profilesmentioning

confidence: 99%

Conceptual design report for the LUXE experiment

Abramowicz

Acosta

Altarelli

et al. 2021

Eur. Phys. J. Spec. Top.

122

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This Conceptual Design Report describes LUXE (Laser Und XFEL Experiment), an experimental campaign that aims to combine the high-quality and high-energy electron beam of the European XFEL with a powerful laser to explore the uncharted terrain of quantum electrodynamics characterised by both high energy and high intensity. We will reach this hitherto inaccessible regime of quantum physics by analysing high-energy electron-photon and photon-photon interactions in the extreme environment provided by an intense laser focus. The physics background and its relevance are presented in the science case which in turn leads to, and justifies, the ensuing plan for all aspects of the experiment: Our choice of experimental parameters allows (i) field strengths to be probed where the coupling to charges becomes non-perturbative and (ii) a precision to be achieved that permits a detailed comparison of the measured data with calculations. In addition, the high photon flux predicted will enable a sensitive search for new physics beyond the Standard Model. The initial phase of the experiment will employ an existing 40 TW laser, whereas the second phase will utilise an upgraded laser power of 350 TW. All expectations regarding the performance of the experimental set-up as well as the expected physics results are based on detailed numerical simulations throughout.

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“…Nevertheless, the determination of the peak intensity of such strong laser pulses represents a formidable task. Recently, a number of various techniques have been extensively discussed in the literature: measuring yields of highly charged ions due to atomic ionization [11][12][13], detecting the light scattering or additional radiation due to the interaction between electrons and the laser field [14][15][16][17][18][19], or the analysis of photoionization or direct acceleration of charged particles [20][21][22][23][24][25][26][27] (see also references therein). In the present paper we discuss how the laser intensity diagnostics can be carried out using the strongfield QED mechanism of pair production due to the interaction of free electrons or free xenon atoms with an intense laser field.…”

Section: Introductionmentioning

confidence: 99%

Pair production seeded by electrons in noble gases as a method for the laser intensity diagnostics

Aleksandrov,

Andreev

2021

Preprint

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Model-independent inference of laser intensity

Cited by 17 publications

References 41 publications

Distance–Intensity Image Strategy for Pulsed LiDAR Based on the Double-Scale Intensity-Weighted Centroid Algorithm

Distance–Intensity Image Strategy for Pulsed LiDAR Based on the Double-Scale Intensity-Weighted Centroid Algorithm

Conceptual design report for the LUXE experiment

Pair production seeded by electrons in noble gases as a method for the laser intensity diagnostics

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