CFEL-UFOX

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2019-05-14
14:03
[PUBDB-2019-02269] Lecture
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CFEL Molecular and Ultrafast Science Seminar (MUSS)
Lecture at Universität Hamburg (), 15 Oct 2018 - 2 Feb 20192018-10-152019-02-02
CFEL Molecular and Ultrafast Science Seminar (MUSS) series. This is a general topical seminar series on developments in modern molecular physics organized by the CFEL Controlled Molecule Imaging group, the Spectroscopy of molecular processes group, the CFEL Attosecond Science group, and the CFEL Ultrafast Optics group. [...]
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2019-05-06
14:55
OpenAccess [PUBDB-2019-02157] Journal Article

Analysis of terahertz generation using tilted pulse fronts
Optics express 27(3), 3496 - 3517 () [10.1364/OE.27.003496]  GO
A spatio-temporal analysis of terahertz generation by optical rectification of tilted pulse fronts is presented. Closed-form expressions of terahertz transients and spectra in two spatial dimensions are furnished in the undepleted limit [...]
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2019-04-04
14:46
OpenAccess [PUBDB-2019-01868] Journal Article
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Frequency-comb-based laser system producing stable optical beat pulses with picosecond durations suitable for high-precision multi-cycle terahertz-wave generation and rapid detection
Optics express 27(8), 11037 - 11056 () [10.1364/OE.27.011037]  GO
We generate temporally modulated optical pulses with a beat frequency of 255 GHz, a duration of 360 ps, and a repetition rate of 2 MHz. The temporal envelope, beat frequency, and repetition rate are computer-programmable. [...]
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2019-01-28
15:22
OpenAccess [PUBDB-2019-00823] Journal Article
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Reconstructing nonlinear plasma wakefields using a generalized temporally encoded spectral shifting analysis
We generalize the temporally encoded spectral shifting (TESS) analysis for measuring plasma wakefields using spectral interferometry to dissimilar probe pulses of arbitrary spectral profile and to measuring nonlinear wakefields. We demonstrate that the Gaussian approximation used up until now results in a substantial miscalculation of the wakefield amplitude, by a factor of up to two [...]
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2018-12-21
07:57
OpenAccess [PUBDB-2018-05840] Conference Presentation
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Polarization states of high-harmonics generated in silicon from elliptical drivers
Ultrafast Phenomena, UP 2018, HamburgHamburg, Germany, 15 Jul 2018 - 20 Jul 20182018-07-152018-07-20  GO
The polarization states of high-harmonics generated in silicon with elliptical excitation is studied. Circularly polarized harmonics are demonstrated with both circular and non-circularexcitation, determined by crystal symmetry and dynamical response of the system..
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2018-12-14
17:13
OpenAccess [PUBDB-2018-05531] Conference Presentation
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Half-cycle mJ-level CEP-stable Pulses fromParametricWaveform Synthesis
CLEO Pacific Rim, CLEO-PR, Hong KongHong Kong, China, 29 Jul 2018 - 3 Aug 20182018-07-292018-08-03  GO
Nearly transform-limited, carrier-envelope phase stable, 3.4 fs pulses with centralwavelength of 1.8 mm are generated via parametric waveform synthesis. The mJ-level energy,at 1 kHz repetition rate, allows for waveform-controlled bright high-harmonic generation..
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2018-12-14
17:10
OpenAccess [PUBDB-2018-05530] Conference Presentation
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Controlled HHG with a Sub-Cycle mJ-Level Parametric Waveform Synthesizer
CLEO Pacific Rim, CLEO-PR, Hong KongHong Kong, China, 29 Jul 2018 - 3 Aug 20182018-07-292018-08-03  GO
We present high-harmonic generation (HHG) driven with a sub-cycle mJ-levelparametric waveform synthesizer. The HHG yield and spectral shape can be controlled byvarying the carrier-envelope phase and the relative phase in the synthesizer channels..
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2018-12-14
17:05
OpenAccess [PUBDB-2018-05529] Conference Presentation
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Two-color-field Driven Hollow-core Fiber Compressor with Robust Inline Scheme
CLEO Pacific Rim, CLEO-PR, Hong KongHong Kong, China, 29 Jul 2018 - 3 Aug 20182018-07-292018-08-03  GO
We present a new scheme of two-color-field driven hollow-core-fiber compression,whose ~1mJ output covers 300 nm to 950 nm supporting sub-cycle pulses of ~2.1 fs duration.The spectral phase is characterized with two-dimensional spectral shearing interferometry..
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2018-12-14
17:01
OpenAccess [PUBDB-2018-05528] Conference Presentation
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Excitation and control of spin waves in FeBO3 by a strong-field THz pulse
Ultrafast Phenomena, UP 2018, HamburgHamburg, Germany, 15 Jul 2018 - 20 Jul 20182018-07-152018-07-20  GO
The dynamically resolved response of the canted-antiferromagnet FeBO3 excited near amagnon resonance shows fast oscillations after THz-excitation, followed by the magnons’ intrinsicrelaxation, enabling to probe transient magnetic relaxation dynamics over large frequency range..
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2018-12-14
16:56
OpenAccess [PUBDB-2018-05527] Poster
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Millijoule-Level Sub-Cycle Pulses from Two Channelsof a Parallel Parametric Waveform Synthesizer
Ultrafast Phenomena, UP2018, HamburgHamburg, Germany, 15 Jul 2018 - 20 Jul 20182018-07-152018-07-20  GO
We report on an optical synthesis of two compressed channels from our parametric waveformsynthesizer, leading to a 0:6 mJ 4:4 fs pulse (3:6 fs transform limited) with a central wavelengthof 1:8 mm, corresponding to 0:74-cycles..
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