Production and measurement of circular polarization in the VUV

Westerveld, W. B.; Becker, K.; Zetner, P W; Corr, J J; McConkey, J W

doi:10.1364/ao.24.002256

Cited by 93 publications

(36 citation statements)

References 8 publications

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“…Polarization measurements in the vacuum ultraviolet ͑VUV͒ present particular difficulties for experimentalists. Much of the available experimental VUV polarization data have been obtained by the Windsor group and refer to the excitation of the rare gases and various molecules ͑see, for example, Westerveld et al ͓3͔,Malcolm,Dassen,and McConkey ͓4͔,Huschilt,Dassen,and McConkey ͓5͔,Dassen and McConkey ͓6͔,. As part of a systematic study of VUV optical emissions from electron-impact excited atomic hydrogen, the Jet Propulsion Laboratory recently reported detailed measurements of the polarization of H Lyman-␣ radiation at electron energies from near threshold to 1800 eV ͑James et al ͓10͔͒.…”

Section: Introductionmentioning

confidence: 99%

Polarization of Lyman-β radiation from atomic hydrogen excited by electron impact from near-threshold energy to 1000 eV

et al. 2002

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The polarization of Lyman-␤ radiation, produced by electron-impact excitation of atomic hydrogen, has been measured over the extended energy range from near threshold to 1000 eV. Measurements were obtained in a crossed-beams experiment using a silica-reflection linear polarization analyzer in tandem with a vacuum ultraviolet monochromator to isolate the emitted line radiation. Our data are in excellent agreement with convergent close-coupling calculations over the entire energy range. The data are broadly similar to the earlier measurements of H Lyman-␣ polarization reported from the Jet Propulsion Laboratory.

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Section: Introductionmentioning

confidence: 99%

Polarization of Lyman-β radiation from atomic hydrogen excited by electron impact from near-threshold energy to 1000 eV

et al. 2002

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“…To simulate and design the instrument for generation of circularly polarized light between 50 eV and 70 eV, we applied the Stokes polarization formalism 13,14,21 for our specific case. The four Stokes parameters are…”

Section: A Simulation Based On Stokes Formalismmentioning

confidence: 99%

“…[9][10][11] In a small-scale laboratory, various EUV and soft X-ray light sources are available, but only few of them are a priori polarized. While linearly polarized EUV light is routinely generated by intense ultrashort laser pulses, 12 only few attempts to either polarize EUV radiation circularly 13,14 or directly generate circular EUV radiation from a femtosecond laser 15 have been reported from laboratory-based experiments. A straightforward concept for conversion of linear to circular EUV polarization is to exploit the phase shift between the s-and p-components of light upon reflection from a flat surface.…”

Section: Introductionmentioning

confidence: 99%

“…For that purpose, a phase shift of ±90 • between the s-and p-components and identical reflectivity for the s-and pcomponents are required. 13,14,16,17 Laboratory-based instruments for generation of circularly polarized EUV light employ up to four mirrors. Due to the low overall reflectivity of a few percent in the EUV spectral range a sufficiently intense EUV light source is required to obtain a reasonable photon flux after the conversion.…”

Section: Introductionmentioning

confidence: 99%

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Generation of circularly polarized radiation from a compact plasma-based extreme ultraviolet light source for tabletop X-ray magnetic circular dichroism studies

Wilson

Rudolf

Weier

et al. 2014

Review of Scientific Instruments

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Generation of circularly polarized light in the extreme ultraviolet (EUV) spectral region (about 25 eV–250 eV) is highly desirable for applications in spectroscopy and microscopy but very challenging to achieve in a small-scale laboratory. We present a compact apparatus for generation of linearly and circularly polarized EUV radiation from a gas-discharge plasma light source between 50 eV and 70 eV photon energy. In this spectral range, the 3p absorption edges of Fe (54 eV), Co (60 eV), and Ni (67 eV) offer a high magnetic contrast often employed for magneto-optical and electron spectroscopy as well as for magnetic imaging. We simulated and designed an instrument for generation of linearly and circularly polarized EUV radiation and performed polarimetric measurements of the degree of linear and circular polarization. Furthermore, we demonstrate first measurements of the X-ray magnetic circular dichroism at the Co 3p absorption edge with a plasma-based EUV light source. Our approach opens the door for laboratory-based, element-selective spectroscopy of magnetic materials and spectro-microscopy of ferromagnetic domains

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“…But to extract useful information, the state of polarization of the VUV light must be accurately 2 determined. Various optical devices based on reflection [20,21,22,23] or transmission with birefringent material such as MgF 2 [24,25] (but in that case, at energies lower than the 10.8 eV transparency limit) have been proposed to produce [26] or to probe [27,28] VUV polarized light. The use of reflection type analyzers usually necessitates a good calibration procedure in the VUV energy region in order to characterize the polarization properties of radiation [29].…”

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confidence: 99%

Polarization properties of coherent VUV light at 125 nm generated by sum-frequency four-wave mixing in mercury

Museur¹,

Olivero²,

Riedel³

et al. 2000

Applied Physics B: Lasers and Optics

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The polarization of the VUV light generated by four-wave sum frequency mixing process ω 4 = 2ω 1 + ω 2 in mercury vapor at room temperature is analyzed in detail.Due to the specific two-photon transition used to enhance the nonlinear process, the polarization of the VUV wave is shown to be identical to the polarization of the wave at the frequency ω 2 . In particular, circularly polarized VUV is observed with degree of circular polarization exceeding 0.99.

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Production and measurement of circular polarization in the VUV

Cited by 93 publications

References 8 publications

Polarization of Lyman-β radiation from atomic hydrogen excited by electron impact from near-threshold energy to 1000 eV

Polarization of Lyman-β radiation from atomic hydrogen excited by electron impact from near-threshold energy to 1000 eV

Generation of circularly polarized radiation from a compact plasma-based extreme ultraviolet light source for tabletop X-ray magnetic circular dichroism studies

Polarization properties of coherent VUV light at 125 nm generated by sum-frequency four-wave mixing in mercury

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