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Coherent Harmonic Generation experiments on UVSOR-II storage ring

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Title: Coherent Harmonic Generation experiments on UVSOR-II storage ring
Authors: Labat, M.1,2 marie.labat@synchrotron-soleil.fr, Lambert, G.1,2,3, Couprie, M.E.2, Shimada, M.4, Katoh, M.4, Hosaka, M.4,5, Takashima, Y.5, Hara, T.6, Mochihashi, A.3
Source: Nuclear Instruments & Methods in Physics Research Section A. Aug2008, Vol. 593 Issue 1/2, p1-5. 5p.
Subjects: Lasers, Free electron lasers, Light sources, X-rays
Abstract: Abstract: Coherent Harmonic Generation (CHG) is of great interest for new Free Electron Laser light sources in the VUV—soft X-ray region. In this configuration, an external laser is focused inside a first undulator. The interaction between the electron beam and the external laser leads to a density modulation resulting in coherent emission with harmonic content in a second undulator. Experiments have been carried out on the UVSOR-II FEL (Okasaki, Japan) seeded with a Ti:Sa laser at 800nm wavelength, 2.5mJ, 1kHz repetition rate and 1.2ps pulse duration. In this paper, generation of the second, third and fourth harmonics of the fundamental (400, 266 and 200nm) using planar undulators is reported, together with angular distribution measurement of the second harmonic. We also present coherent generation of the second and third harmonic using helical undulators. These investigations on even harmonic generation with both undulator configurations may provide interesting insight in nonlinear harmonic generation with FELs for next generation FELs, aiming at GW pulse delivery at sub-nm wavelengths. [Copyright &y& Elsevier]
Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 33459820
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PubType: Academic Journal
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  Data: Coherent Harmonic Generation experiments on UVSOR-II storage ring
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  Data: <searchLink fieldCode="AR" term="%22Labat%2C+M%2E%22">Labat, M.</searchLink><relatesTo>1,2</relatesTo><i> marie.labat@synchrotron-soleil.fr</i><br /><searchLink fieldCode="AR" term="%22Lambert%2C+G%2E%22">Lambert, G.</searchLink><relatesTo>1,2,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Couprie%2C+M%2EE%2E%22">Couprie, M.E.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Shimada%2C+M%2E%22">Shimada, M.</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Katoh%2C+M%2E%22">Katoh, M.</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Hosaka%2C+M%2E%22">Hosaka, M.</searchLink><relatesTo>4,5</relatesTo><br /><searchLink fieldCode="AR" term="%22Takashima%2C+Y%2E%22">Takashima, Y.</searchLink><relatesTo>5</relatesTo><br /><searchLink fieldCode="AR" term="%22Hara%2C+T%2E%22">Hara, T.</searchLink><relatesTo>6</relatesTo><br /><searchLink fieldCode="AR" term="%22Mochihashi%2C+A%2E%22">Mochihashi, A.</searchLink><relatesTo>3</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Nuclear+Instruments+%26+Methods+in+Physics+Research+Section+A%22">Nuclear Instruments & Methods in Physics Research Section A</searchLink>. Aug2008, Vol. 593 Issue 1/2, p1-5. 5p.
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  Data: Abstract: Coherent Harmonic Generation (CHG) is of great interest for new Free Electron Laser light sources in the VUV—soft X-ray region. In this configuration, an external laser is focused inside a first undulator. The interaction between the electron beam and the external laser leads to a density modulation resulting in coherent emission with harmonic content in a second undulator. Experiments have been carried out on the UVSOR-II FEL (Okasaki, Japan) seeded with a Ti:Sa laser at 800nm wavelength, 2.5mJ, 1kHz repetition rate and 1.2ps pulse duration. In this paper, generation of the second, third and fourth harmonics of the fundamental (400, 266 and 200nm) using planar undulators is reported, together with angular distribution measurement of the second harmonic. We also present coherent generation of the second and third harmonic using helical undulators. These investigations on even harmonic generation with both undulator configurations may provide interesting insight in nonlinear harmonic generation with FELs for next generation FELs, aiming at GW pulse delivery at sub-nm wavelengths. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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