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Generation of brigh...
Generation of bright phase-matched circularly-polarized extreme ultraviolet high harmonics
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Kfir, Ofer (author)
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Grychtol, Patrik (author)
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Turgut, Emrah (author)
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Knut, Ronny (author)
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Zusin, Dmitriy (author)
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Popmintchev, Dimitar (author)
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Popmintchev, Tenio (author)
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Nembach, Hans (author)
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Shaw, Justin M. (author)
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Fleischer, Avner (author)
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Kapteyn, Henry (author)
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Murnane, Margaret (author)
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Cohen, Oren (author)
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- 2015
- 2015
- English.
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In: Nature Photonics. - 1749-4885 .- 1749-4893. ; 9:2, s. 99-105
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Abstract
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- Circularly-polarized extreme ultraviolet and X-ray radiation is useful for analysing the structural, electronic and magnetic properties of materials. To date, such radiation has only been available at large-scale X-ray facilities such as synchrotrons. Here, we demonstrate the first bright, phase-matched, extreme ultraviolet circularly-polarized high harmonics source. The harmonics are emitted when bi-chromatic counter-rotating circularly-polarized laser pulses field-ionize a gas in a hollow-core waveguide. We use this new light source for magnetic circular dichroism measurements at the M-shell absorption edges of Co. We show that phase-matching of circularly-polarized harmonics is unique and robust, producing a photon flux comparable to linearly polarized high harmonic sources. This work represents a critical advance towards the development of table-top systems for element-specific imaging and spectroscopy of multiple elements simultaneously in magnetic and other chiral media with very high spatial and temporal resolution.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Kfir, Ofer
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Grychtol, Patrik
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Turgut, Emrah
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Knut, Ronny
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Zusin, Dmitriy
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Popmintchev, Dim ...
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show more...
-
Popmintchev, Ten ...
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Nembach, Hans
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Shaw, Justin M.
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Fleischer, Avner
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Kapteyn, Henry
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Murnane, Margare ...
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Cohen, Oren
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
- Articles in the publication
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Nature Photonics
- By the university
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Uppsala University