Polarization analyses of elliptically-polarized vacuum-ultraviolet undulator radiation

Koide, T.; Shidara, T.; Yuri, Masatada

doi:10.1016/0168-9002(93)91122-4

Cited by 24 publications

(6 citation statements)

References 28 publications

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“…which are typically used to characterize the degree of polarization (Bahrdt et al, 2010;Finetti et al, 2004;Koide et al, 1993Koide et al, , 1991Nahon and Alcaraz, 2004;Nahon et al, 2012;Saito et al, 2014;Uschakow et al, 2013;Yamamoto et al, 2014). Using Eq.…”

Section: Elliptically Polarized Lightmentioning

confidence: 99%

An experimentalist's guide to the matrix element in angle resolved photoemission

Moser

2017

Journal of Electron Spectroscopy and Related Phenomena

164

136

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Angle resolved photoemission spectroscopy (ARPES) is commonly known as a powerful probe of the one-electron removal spectral function in ordered solid state. With increasing efficiency of light sources and spectrometers, experiments over a wide range of emission angles become more and more common. Consequently, the angular variation of ARPES spectral weight-often times termed "matrix element effect"-enters as an additional source of information. In this tutorial, we develop a simple but instructive free electron final state approach based on the three-step model to describe the intensity distribution in ARPES. We find a compact expression showing that the ARPES spectral weight of a given Bloch band is essentially determined by the momentum distribution (the Fourier transform) of its associated Wannier orbital-times a polarization dependent pre-factor. While the former is giving direct information on the symmetry and shape of the electronic wave function, the latter can give rise to surprising geometric effects. We discuss a variety of modern and instructive experimental showcases for which this simplistic formalism works astonishingly well and discuss the limits of this approach.

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Section: Elliptically Polarized Lightmentioning

confidence: 99%

An experimentalist's guide to the matrix element in angle resolved photoemission

Moser

2017

Journal of Electron Spectroscopy and Related Phenomena

164

136

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“…15 At shorter wavelengths it is necessary to use reflection-based polarimeters such as the one developed at the Photon Factory by Koide et al, who measured P c ϳ 80% in the 60 -80-eV range on the BL11D beam line 16 and 55-90% in the 50 -80-eV range on the BL28 beam line. 17 Further into the soft-x-ray range, a polarimeter based on transmission and reflections with multilayer optics 18 was used to commission several beam lines at the Berlin Electron Storage Ring ͑BESSY͒ and ELETTRA operating in the water-window range.…”

Section: Introductionmentioning

confidence: 99%

SU5: a calibrated variable-polarization synchrotron radiation beam line in the vacuum-ultraviolet range

Nahon¹,

Alcaraz²

2004

Appl. Opt.

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SU5 is a high-resolution variable-polarization synchrotron radiation (SR) beam line with which linear and circular dichroism experiments are performed in the vacuum ultraviolet (VUV) range (5-40eV), based on an electromagnetic crossed undulator called the Onduleur Plan/Helicoidal du Lure à Induction Electromagnétique (OPHELIE). To get precise knowledge of the polarization state of the emitted SR and to take into account the polarization transformations induced by reflection on the various optics, we set up an in situ VUV polarimeter to provide a precise and complete polarization analysis of the SR atthe sample location. The overall measured polarization performances were highly satisfactory, with measured linear polarization rates of more than 98% (83%) in the vertical (horizontal) linear polarization mode and an average 92.1% (95.2%) circular polarization rate for the right- (left)-handed circular polarization mode, which, to our knowledge, are the highest reported values in the VUV range. Despite some uneven photon energy efficiency, the OPHELIE crossed undulator behaves as expected in terms of polarization, permitting full control of the emitted polarization by manipulation of the vertical-to-horizontal magnetic field ratio (rho(und)) and the relative longitudinal phase (phi(und)).

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“…A method for evaluating the polarization characteristics of incident light in this range is therefore an important concern in the synchrotron community. The diagnosis of the polarization state can be precisely made with an optical method using polarimeters (Gaupp & Mast, 1989;Koide et al, 1991Koide et al, , 1993Schä fers et al, 1999;Finetti et al, 2004;Nahon & Alcaraz, 2004). Such a measurement, however, requires stringent alignment of the polarimeters, and the fabrication and manipulation of an effective polarimeter system are still challenging.…”

Section: Introductionmentioning

confidence: 99%

Zeeman quantum beats of helium Rydberg states excited by synchrotron radiation

2020

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Quantum beats in fluorescence decay from Zeeman-split magnetic sublevels have been measured for helium Rydberg states excited by synchrotron radiation. The Zeeman quantum beats observed in this prototypical case were fitted with an equation from a theoretical formulation. It is proposed that Zeeman quantum beat measurement can be a useful way to simply evaluate the polarization characteristics of extreme ultraviolet light.

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Polarization analyses of elliptically-polarized vacuum-ultraviolet undulator radiation

Cited by 24 publications

References 28 publications

An experimentalist's guide to the matrix element in angle resolved photoemission

An experimentalist's guide to the matrix element in angle resolved photoemission

SU5: a calibrated variable-polarization synchrotron radiation beam line in the vacuum-ultraviolet range

Zeeman quantum beats of helium Rydberg states excited by synchrotron radiation

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