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Injection of harmonics generated in gas in a free-electron laser providing intense and coherent extreme-ultraviolet light

Journal Article:

Abstract

Conventional synchrotron radiation sources enable the structure of matter to be studied at near-atomic spatial resolution and picosecond temporal resolution. Free-electron lasers promise to extend this down to femtosecond timescales. The process by which free-electron lasers amplify synchrotron light-known as self-amplified spontaneous emission - is only partially temporally coherent, but this can be improved by seeding it with an external laser. Here we explore the use of seed light produced by high-order harmonic generation in a gas, covering wavelengths from the ultraviolet to soft X-rays. Using the SPring-8 Compact SASE Source test accelerator, we demonstrate an increase of three orders of magnitude in the intensity of the fundamental radiation at 160 nm, halving of the free-electron laser saturation length, and the generation of nonlinear harmonics at 54 nm and 32 nm. The low seed level used in this demonstration suggests that nonlinear harmonic schemes should enable the generation of fully coherent soft X-rays at wavelengths down to the so-called 'water window', vital for the study of biological samples. (authors)
Authors:
Lambert, G; Garzella, D; Labat, M; Carre, B; Bougeard, M; Salieres, P; Merdji, H; Gobert, O; [1]  Lambert, G; Hara, T; Tanikawa, T; Kitamura, H; Shintake, T; Tanaka, Y; Tahara, K; [2]  Lambert, G; Labat, M; Chubar, O; Couprie, M E; [3]  Hara, T; Kitamura, H; Shintake, T; Inoue, S; Tanaka, Y [4] 
  1. CEA Saclay, DSM, DRECAM, Serv. Photons Atomes Mol., F-91191 Gif sur Yvette, (France)
  2. RIKEN SPring Centre, Harima Inst., Hyogo 679-5148, (Japan)
  3. Groupe Magnetisme et Insertion, Synchrotron Soleil, F-91192 Gif sur Yvette, (France)
  4. XFEL Project Head Office, RIKEN, Hyogo 679-5148, (Japan)
Publication Date:
Jul 01, 2008
Product Type:
Journal Article
Resource Relation:
Journal Name: Nature Physics (Print); Journal Volume: 4; Journal Issue: 4; Other Information: 30 refs
Subject:
43 PARTICLE ACCELERATORS; AMPLIFICATION; FREE ELECTRON LASERS; HARMONICS; SOFT X RADIATION; ULTRAVIOLET RADIATION
OSTI ID:
21286202
Country of Origin:
France
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 1745-2473; TRN: FR10F0088034494
Availability:
Available from doi: <http://dx.doi.org/10.1038/nphys889>;INIS
Submitting Site:
FRN
Size:
page(s) 296-300
Announcement Date:
May 19, 2010

Journal Article:

Citation Formats

Lambert, G, Garzella, D, Labat, M, Carre, B, Bougeard, M, Salieres, P, Merdji, H, Gobert, O, Lambert, G, Hara, T, Tanikawa, T, Kitamura, H, Shintake, T, Tanaka, Y, Tahara, K, Lambert, G, Labat, M, Chubar, O, Couprie, M E, Hara, T, Kitamura, H, Shintake, T, Inoue, S, and Tanaka, Y. Injection of harmonics generated in gas in a free-electron laser providing intense and coherent extreme-ultraviolet light. France: N. p., 2008. Web. doi:10.1038/NPHYS889.
Lambert, G, Garzella, D, Labat, M, Carre, B, Bougeard, M, Salieres, P, Merdji, H, Gobert, O, Lambert, G, Hara, T, Tanikawa, T, Kitamura, H, Shintake, T, Tanaka, Y, Tahara, K, Lambert, G, Labat, M, Chubar, O, Couprie, M E, Hara, T, Kitamura, H, Shintake, T, Inoue, S, & Tanaka, Y. Injection of harmonics generated in gas in a free-electron laser providing intense and coherent extreme-ultraviolet light. France. doi:10.1038/NPHYS889.
Lambert, G, Garzella, D, Labat, M, Carre, B, Bougeard, M, Salieres, P, Merdji, H, Gobert, O, Lambert, G, Hara, T, Tanikawa, T, Kitamura, H, Shintake, T, Tanaka, Y, Tahara, K, Lambert, G, Labat, M, Chubar, O, Couprie, M E, Hara, T, Kitamura, H, Shintake, T, Inoue, S, and Tanaka, Y. 2008. "Injection of harmonics generated in gas in a free-electron laser providing intense and coherent extreme-ultraviolet light." France. doi:10.1038/NPHYS889. https://www.osti.gov/servlets/purl/10.1038/NPHYS889.
@misc{etde_21286202,
title = {Injection of harmonics generated in gas in a free-electron laser providing intense and coherent extreme-ultraviolet light}
author = {Lambert, G, Garzella, D, Labat, M, Carre, B, Bougeard, M, Salieres, P, Merdji, H, Gobert, O, Lambert, G, Hara, T, Tanikawa, T, Kitamura, H, Shintake, T, Tanaka, Y, Tahara, K, Lambert, G, Labat, M, Chubar, O, Couprie, M E, Hara, T, Kitamura, H, Shintake, T, Inoue, S, and Tanaka, Y}
abstractNote = {Conventional synchrotron radiation sources enable the structure of matter to be studied at near-atomic spatial resolution and picosecond temporal resolution. Free-electron lasers promise to extend this down to femtosecond timescales. The process by which free-electron lasers amplify synchrotron light-known as self-amplified spontaneous emission - is only partially temporally coherent, but this can be improved by seeding it with an external laser. Here we explore the use of seed light produced by high-order harmonic generation in a gas, covering wavelengths from the ultraviolet to soft X-rays. Using the SPring-8 Compact SASE Source test accelerator, we demonstrate an increase of three orders of magnitude in the intensity of the fundamental radiation at 160 nm, halving of the free-electron laser saturation length, and the generation of nonlinear harmonics at 54 nm and 32 nm. The low seed level used in this demonstration suggests that nonlinear harmonic schemes should enable the generation of fully coherent soft X-rays at wavelengths down to the so-called 'water window', vital for the study of biological samples. (authors)}
doi = {10.1038/NPHYS889}
journal = {Nature Physics (Print)}
issue = {4}
volume = {4}
place = {France}
year = {2008}
month = {Jul}
}