CFEL-LUX

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2018-11-07
12:29
[PUBDB-2018-04259] Contribution to a conference proceedings/Contribution to a book
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Demonstration of 0.6 mJ Multicycle THz Pulses Via Chirp-and-delay Down Conversion of Broadband Lasers with Precise Spectral Phase Tuning and Large PPLN
43rd International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2018, NagoyaNagoya, Japan, 9 Sep 2018 - 14 Sep 20182018-09-092018-09-14 IEEE 1 pp. () [10.1109/IRMMW-THz.2018.8509911] special issue: "IEEE Xplore"  GO
Millijoule-scale multicycle terahertz (THz) sources have recently gained interest for applications where high-peak-fields and narrow bandwidths can produce unique results, such as linear and nonlinear spectroscopy [1], control of matter [2], and compact electron acceleration [3]. Difference frequency generation (DFG) using periodically-poled lithium niobate (PPLN) is a very promising method for producing such pulses, due to the high nonlinear coefficient of lithium niobate and the tunability of the periodic poling. [...]
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2018-02-22
10:34
[PUBDB-2018-01280] Journal Article
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Acceleration of electrons in THz driven structures for AXSIS
We describe initial steps in the development of the technology for a THz-driven accelerator that will drive a compact attosecond X-ray light source. THz- driven structures represent a promising emerging technology for compact acceleration of sub-femtosecond electron bunches. [...]
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2018-02-06
15:20
OpenAccess [PUBDB-2018-01078] Conference Presentation (Invited)
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Frequency-shifted sources for Terahertz-driven linear electron acceleration
SPIE Photonics West 2018, San Francisco, CASan Francisco, CA, USA, 27 Jan 2018 - 1 Feb 20182018-01-272018-02-01  GO
The generation of THz-frequency radiation via nonlinear parametric frequency down-conversion has long been driven by the spectroscopy and imaging communities. As a result, little efforts have been undertaken toward the generation of high energy THz-frequency pulses. [...]
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2018-01-09
10:44
OpenAccess [PUBDB-2018-00272] Journal Article
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Ultrashort Free-Electron Laser X-ray Pulses
Applied Sciences 7(9), 915 - () [10.3390/app7090915]  GO
For the investigation of processes happening on the time scale of the motion of bound electrons, well-controlled X-ray pulses with durations in the few-femtosecond and even sub-femtosecond range are a necessary prerequisite. Novel free-electron lasers sources provide these ultrashort, high-brightness X-ray pulses, but their unique aspects open up concomitant challenges for their characterization on a suitable time scale [...]
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2017-10-09
14:16
OpenAccess [PUBDB-2017-11222] Book/Report/Dissertation / PhD Thesis
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High energy multi-cycle terahertz generation
[DESY-THESIS-2017-039]
Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY-THESIS 198 pp. () [10.3204/PUBDB-2017-11222] = Universität Hamburg, Diss., 2017  GO
Development of compact electron accelerators and free-electron lasers requires novel acceleration schemes at shorter driving wavelengths. The Axsis project seeks to developterahertz based electron acceleration as well as the high energy terahertz sources required. [...]
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2017-08-16
14:52
OpenAccess [PUBDB-2017-09395] Conference Presentation
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Narrowband THz generation via chirp-and-delay in PPLN
Conference on Lasers and Electro-Optics/Europe and the European Quantum Electronics Conference, CLEO®/Europe-EQEC 2017, MunichMunich, Germany, 25 Jun 2017 - 29 Jun 20172017-06-252017-06-29  GO
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2017-08-08
15:22
[PUBDB-2017-08938] Contribution to a conference proceedings/Contribution to a book
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Narrowband Terahertz Generation with Broadband Chirped Pulse Trains in Periodically Poled Lithium Niobate
CLEO: QELS_Fundamental Science in Proceedings Conference on Lasers and Electro-Optics
Conference on Lasers and Electro-Optics, CLEO 2017, San Jose, CaliforniaSan Jose, California, USA, 14 May 2017 - 19 May 20172017-05-142017-05-19
Washington, D.C. : OSA FW4D () [10.1364/CLEO_QELS.2017.FW4D.4] special issue: "CLEO: QELS_Fundamental Science 2017"  GO
We generate narrowband terahertz radiation in periodically poled lithium niobate crystals using a train of chirped-and-delayed pulses from a broadband high energy Ti:sapphire laser. We achieve a multi-cycle THz energy of 40 mJ at 0.544 THz..
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2017-05-30
13:29
OpenAccess [PUBDB-2017-03953] Report/Journal Article
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Chirp Mitigation of Plasma-Accelerated Beams by a Modulated Plasma Density
[arXiv:1603.08489]
Plasma-based accelerators offer the possibility to drive future compact light sources and high-energy physics applications. Achieving good beam quality, especially a small beam energy spread, is still one of the major challenges. [...]
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2017-05-17
11:16
Embargoed OpenAccess [PUBDB-2017-03059] Journal Article
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Narrowband terahertz generation wich chirped-and-delayed laser pulses in periodically poled lithium niobate
Optics letters 42(11), 2118 - 2121 () [10.1364/OL.42.002118]  GO
We generate narrowband terahertz (THz) radiation in periodically poled lithium niobate (PPLN) crystals using two chirped-and-delayed driver pulses from a high-energy Ti:sapphire laser. The generated frequency is determined by the phase-matching condition in the PPLN and influences the temporal delay of the two pulses for efficient terahertz generation. [...]
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2017-05-09
13:40
OpenAccess [PUBDB-2017-02493] Book/Report/Dissertation / PhD Thesis
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Advanced Beam Dynamics and Diagnostics Concepts for Laser-Plasma Accelerators
[DESY-THESIS-2017-018]
Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY-THESIS 132 pp. () [10.3204/PUBDB-2017-02493] = Dissertation, Universität Hamburg, 2017  GO
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