FS-LA

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2020-01-23
14:54
[PUBDB-2020-00522] Journal Article
et al
Time- and momentum-resolved photoemission studies using time-of-flight momentum microscopy at a free-electron laser
ddc:620
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2019-12-31
17:14
OpenAccess [PUBDB-2019-05692] Contribution to a conference proceedings
et al
Simulation Studies for a EEHG seeded FEL in the XUV
10th International Particle Accelerator Conference, IPAC'19, MelbourneMelbourne, Australia, 19 May 2019 - 24 May 20192019-05-192019-05-24 JACoW Publishing, Geneva, Switzerland 1705-1708 () [10.18429/JACOW-IPAC2019-TUPRB013]  GO
Echo-enabled harmonic generation (EEHG) is a promising technique for seeded free electron lasers (FELs) not only to go down to wavelengths of 4 nm, but also to simplify the schemes that are currently used to achieve a similar wavelength range (double cascade HGHG). Thus a study optimizing the EEHG performance in the wavelength range from 60 to §I{4}{nm} has been performed. [...]
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2019-12-12
14:42
OpenAccess [PUBDB-2019-05107] Contribution to a conference proceedings
et al
A Concept for Upgrade of FLASH2 Undulator Line
10th International Particle Accelerator Conference, IPAC'19, MelbourneMelbourne, Australia, 19 May 2019 - 24 May 20192019-05-192019-05-24 JACoW Publishing, Geneva, Switzerland 1736 - 1739 () [10.18429/JACOW-IPAC2019-TUPRB024]  GO
FLASH is the first soft X-ray FEL user facility, routinely providing brilliant photon beams for users since 2005. There are plans to upgrade both existing undulator lines of this facility, FLASH1 and FLASH2. [...]
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2019-12-11
13:54
OpenAccess [PUBDB-2019-05009] Contribution to a conference proceedings/Contribution to a book
et al
Seeding R&D at sFLASH∗
39th International Free-Electron Laser Conference, FEL19, HamburgHamburg, Germany, 26 Aug 2019 - 30 Aug 20192019-08-262019-08-30 230--233 () [10.3204/PUBDB-2019-05009]  GO
Free-electron lasers (FELs) based on the self-amplified spontaneous emission (SASE) principle generate photon pulses with typically poor longitudinal coherence. FEL seeding techniques greatly improve longitudinal coherence by initiating FEL amplification in a controlled way using coherent light pulses. [...]
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2019-12-11
13:38
[PUBDB-2019-05005] Contribution to a conference proceedings/Contribution to a book
et al
Comparison of two low-noise CEP stabilization methods for an environmentally stable Yb:fiber oscillator
Laser Applications Conference 2019, ViennaVienna, Austria, 29 Sep 2019 - 3 Oct 20192019-09-292019-10-03 - ()
We demonstrate a low-noise carrier-envelope-offset frequency stabilized all-PM Yb:fiber oscillator. Two different stabilization methods lead to sub 200 mrad integrated fo phase noise (10 Hz to 1 MHz), suitable for comb spectroscopy applications [...]

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2019-12-11
13:37
[PUBDB-2019-05004] Patent
et al
Yb: and Nd: mode locked oscillators and fiber systems incorporated in solid-state short pulse laser systems
The invention describes classes of robust fiber laser systems usable as pulse sources for Nd: or Yb: based regenerative amplifiers intended for industrial settings. The invention modifies adapts and incorporates several recent advances in FCPA systems to use as the input source for this new class of regenerative amplifier..
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2019-12-09
15:59
[PUBDB-2019-04868] Contribution to a conference proceedings/Contribution to a book
et al
Tunable all-polarization-maintaining single-cavity dual-color/dual-comb from an Yb:fiber laser
Laser Congress 2019 (ASSL, LAC, LS&C) : [Proceedings] - OSA Washington, D.C., 2019. - ISBN 978-1-943580-68-2 - doi:10.1364/ASSL.2019.ATu1A.6
Advanced Solid State Lasers, ViennaVienna, -, 29 Sep 2019 - 3 Oct 20192019-09-292019-10-03
OSA Washington, D.C. - () [10.1364/ASSL.2019.ATu1A.6]  GO
We review and discuss insights on ideal magnetohydrodynamic (MHD) instabilitiesthat can play a role in destabilizing solar coronal flux rope structures. For singleflux ropes, failed or actual eruptions may result from internal or external kink evolutions,or from torus-unstable configurations. [...]
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2019-12-09
15:57
[PUBDB-2019-04867] Contribution to a conference proceedings/Contribution to a book
et al
Comparison of two low-noise CEP stabilization methods for an environmentally stable Yb:fiber oscillator
Laser Congress 2019 (ASSL, LAC, LS&C) : [Proceedings] - OSA Washington, D.C., 2019. - ISBN 978-1-943580-68-2 - doi:10.1364/ASSL.2019.JTu3A.17
Advanced Solid State Lasers, ViennaVienna, -, 29 Sep 2019 - 3 Oct 20192019-09-292019-10-03
OSA Washington, D.C. - () [10.1364/ASSL.2019.JTu3A.17]  GO
We demonstrate a low-noise carrier-envelope-offset frequency stabilized all-PM Yb:fiber oscillator. Two different stabilization methods lead to sub 200 mrad integrated fo phase noise (10 Hz to 1 MHz), suitable for comb spectroscopy applications..

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2019-12-09
09:57
OpenAccess [PUBDB-2019-04824] Journal Article
et al
Tunable dual-comb from an all-polarization-maintaining single-cavity dual-color Yb:fiber laser
Optics express 27(20), 28062 - () [10.1364/OE.27.028062]  GO
We demonstrate dual-comb generation from an all-polarization-maintaining dual-color ytterbium (Yb) fiber laser. Two pulse trains with center wavelengths at 1030 nm and 1060 nm respectively are generated within the same laser cavity with a repetition rate around 77 MHz [...]
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ddc:530
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2019-11-26
12:19
OpenAccess [PUBDB-2019-04483] Contribution to a conference proceedings
et al
The European XFEL Photocathode Laser
The 39th International Free-Electron Laser Conference, FEL19, HamburgHamburg, Germany, 26 Aug 2019 - 30 Aug 20192019-08-262019-08-30 JACoW Publishing, Geneva, Switzerland 423-426 () [10.18429/JACOW-FEL2019-WEP046]  GO
We present the Yb:fiber, Nd:YVO4 laser used to generate electrons from the RF photocathode gun at the European XFEL. The laser provides deep UV output pulses in 600 µs bursts with variable internal repetition rate (564 kHz to 4.5 MHz). [...]
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