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Hage A, Landgraf B, Taylor M, Wünsche M, Gangolf T, Höppner H, Prandolini MJ, Riedel R, Schulz M, Tavella F, Willner A, Yeung M, Paulus GG, Spielmann C, Dromey B, Zepf M. New design of a multi-jet target for quasi phase matching. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2014; 85:103105. [PMID: 25362369 DOI: 10.1063/1.4897269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
An improved dual-gas quasi-phase matching (QPM) foil target for high harmonic generation (HHG) is presented. The target can be setup with 12 individual gas inlets each feeding multiple nozzles separated by a minimum distance of 10 μm. Three-dimensional gas density profiles of these jets were measured using a Mach-Zehnder Interferometer. These measurements reveal how the jets influence the density of gas in adjacent jets and how this leads to increased local gas densities. The analysis shows that the gas profiles of the jets are well defined up to a distance of about 300 μm from the orifice. This target design offers experimental flexibility, not only for HHG/QPM investigations, but also for a wide range of experiments due to the large number of possible jet configurations. We demonstrate the application to controlled phase tuning in the extreme ultraviolet using a 1 kHz-10 mJ-30 fs-laser system where interference between two jets in the spectral range from 17 to 30 nm was observed.
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Affiliation(s)
- A Hage
- Deutsches Elektronensynchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
| | - B Landgraf
- Institute of Optics and Quantum Electronics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany
| | - M Taylor
- School of Mathematics and Physics, Queen's University, University Road, Belfast BT7 1NN, United Kingdom
| | - M Wünsche
- Institute of Optics and Quantum Electronics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany
| | - T Gangolf
- Institute of Optics and Quantum Electronics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany
| | - H Höppner
- Deutsches Elektronensynchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
| | - M J Prandolini
- Helmholtzinstitut Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - R Riedel
- Helmholtzinstitut Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - M Schulz
- Deutsches Elektronensynchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
| | - F Tavella
- Helmholtzinstitut Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - A Willner
- Deutsches Elektronensynchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
| | - M Yeung
- School of Mathematics and Physics, Queen's University, University Road, Belfast BT7 1NN, United Kingdom
| | - G G Paulus
- Institute of Optics and Quantum Electronics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany
| | - C Spielmann
- Helmholtzinstitut Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - B Dromey
- School of Mathematics and Physics, Queen's University, University Road, Belfast BT7 1NN, United Kingdom
| | - M Zepf
- School of Mathematics and Physics, Queen's University, University Road, Belfast BT7 1NN, United Kingdom
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Parametric amplification of attosecond pulse trains at 11 nm. Sci Rep 2014; 4:4254. [PMID: 24594502 PMCID: PMC3942697 DOI: 10.1038/srep04254] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 02/13/2014] [Indexed: 11/08/2022] Open
Abstract
We report the first experimental demonstration of the parametric amplification of attosecond pulse trains at around 11 nm. The helium amplifier is driven by intense laser pulses and seeded by high-order harmonics pulses generated in a neon gas jet. Our measurements suggest that amplification takes place only if the seed pulse-trains are perfectly synchronized in time with the driving laser field in the amplifier. Varying the delay, we estimate the durations of the individual extreme ultraviolet pulses within the train to be on the order of 0.2 fs. Our results demonstrate that strong-field parametric amplification can be a suitable tool to amplify weak attosecond pulses from non-destructive pump-probe experiments and it is an important step towards designing amplifiers for realization of energetic XUV pulses with sub-femtosecond duration using compact lasers fitting in university laboratories.
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