482 citations · 1.8k across the 25 of their papers we have counts for
27 papers
Thorium-229 in its Highest Charge States: Single-Ion Nuclear Clocks for Tests of Fundamental Interactions
C. Brandau, P. Micke, I. Hartl +6
The prospects and the implementation of single-ion nuclear clocks of Th ions in their highest charge states are discussed. Highly-ionized-thorium…
Post-compression of multi-mJ picosecond pulses to few-cycles approaching the terawatt regime
Supriya Rajhans, Esmerando Escoto, Nikita Khodakovskiy +10
Advancing ultrafast high-repetition-rate lasers to shortest pulse durations comprising only a few optical cycles while pushing their energy into the multi-millijoule regime opens a…
Acousto-Optic Modulation in Ambient Air
Yannick Schrödel, Claas Hartmann, Tino Lang +15
Control over intensity, shape, direction, and phase of coherent light is essential in numerous fields, reaching from gravitational wave astronomy over quantum metrology and ultrafa…
Few-cycle pulse generation by double-stage hybrid multi-pass multi-plate nonlinear pulse compression
Anne-Lise Viotti, Chen Li, Gunnar Arisholm +4
Few-cycle pulses present an essential tool to track ultrafast dynamics in matter and drive strong field effects. To address photon-hungry applications, high average power lasers ar…
Ultrafast serrodyne optical frequency translator
Prannay Balla, Henrik Tünnermann, Sarper H. Salman +4
The serrodyne principle enables shifting the frequency of an electromagnetic signal by applying a linear phase ramp in the time domain [1]. This phenomenon has been exploited to fr…
Self-broadening and self-shift in the band of ammonia from mid-infrared-frequency-comb spectroscopy
Guang Yang, Vinicius Silva de Oliveira, Dominic Laumer +4
We report the broadband absorption spectrum of the band of NH near 4 . The data were recorded using a mid-infrared frequency comb coupled to a homebuilt F…
Temporal quality of post-compressed pulses at large compression factors
Esmerando Escoto, Anne-Lise Viotti, Skirmantas Alisauskas +3
Post-compression of ultra-short laser pulses via self-phase modulation is routinely employed for the generation of laser pulses with optical bandwidths reaching far beyond the lase…
Factor 30 pulse compression by hybrid multi-pass multi-plate spectral broadening
Marcus Seidel, Prannay Balla, Chen Li +4
As Ultrafast laser technology advances towards ever higher peak and average powers, generating sub-50 fs pulses from laser architectures that exhibit best power-scaling capabilitie…
1 GHz dual-comb spectrometer for fast and broadband measurements
Thibault Voumard, John Darvill, Thibault Wildi +4
Dual-frequency comb spectroscopy permits broadband precision spectroscopic measurements with short acquisition time. A dramatic improvement of the maximal spectral bandwidth and th…
Ultrafast MHz-rate burst-mode pump-probe laser for the FLASH FEL facility based on nonlinear compression of ps-level pulses from an Yb-amplifier chain
Marcus Seidel, Federico Pressacco, Oender Akcaalan +24
The Free-Electron Laser (FEL) FLASH offers the worldwide still unique capability to study ultrafast processes with high-flux, high-repetition rate XUV and soft X-ray pulses. The va…
Compact, all-PM fiber integrated and alignment-free ultrafast Yb:fiber NALM laser with sub-femtosecond timing jitter
Yuxuan Ma, Sarper H. Salman, Chen Li +8
We report a simple and compact design of a dispersion compensated mode-locked Yb:fiber oscillator based on a nonlinear amplifying loop mirror (NALM). The fully polarization maintai…
Flexible all-PM NALM Yb:fiber laser design for frequency comb applications: operation regimes and their noise properties
Aline S. Mayer, Wilfrid Grosinger, Jakob Fellinger +8
We present a flexible all-polarization-maintaining (PM) mode-locked ytterbium (Yb):fiber laser based on a nonlinear amplifying loop mirror (NALM). In addition to providing detailed…
Post-compression of picosecond pulses into the few-cycle regime
Prannay Balla, Ammar Bin Wahid, Ivan Sytcevich +18
In this work, we demonstrate post-compression of 1.2 picosecond laser pulses to 13 fs via gas-based multi-pass spectral broadening. Our results yield a single-stage compression fac…
Letter of Intent for the LUXE Experiment
H. Abramowicz, M. Altarelli, R. Aßmann +34
This Letter of Intent describes LUXE (Laser Und XFEL Experiment), an experiment that aims to use the high-quality and high-energy electron beam of the European XFEL and a powerful…
Tunable dual-comb from an all-polarization-maintaining single-cavity dual-color Yb:fiber laser
Jakob Fellinger, Aline S. Mayer, Georg Winkler +7
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 resp…
Intensity Noise Optimization of a Mid-Infrared Frequency Comb Difference Frequency Generation Source
Vinicius Silva de Oliveira, Axel Ruehl, Piotr Masłowski +1
We experimentally demonstrate in a difference-frequency generation mid-infrared frequency comb source the effect of temporal overlap between pump- and signal- pulse to the relative…
Transverse and longitudinal characterization of electron beams using interaction with optical near-fields
Martin Kozák, Joshua McNeur, Kenneth J. Leedle +9
We demonstrate an experimental technique for both transverse and longitudinal characterization of bunched femtosecond free electron beams. The operation principle is based on monit…
Operation regimes, gain dynamics and highly stable operation points of Ho:YLF regenerative amplifiers
Peter Kroetz, Axel Ruehl, Anne-Laure Calendron +6
We present a comprehensive study of laser pulse amplification with respect to operation regimes, gain dynamics, and highly stable operation points of Ho:YLF regenerative amplifiers…
Elements of a dielectric laser accelerator
Joshua McNeur, Martin Kozák, Norbert Schönenberger +11
The widespread use of high energy particle beams in basic research, medicine and coherent X-ray generation coupled with the large size of modern radio frequency (RF) accelerator de…
Optical gating and streaking of free-electrons with attosecond precision
Martin Kozak, Joshua McNeur, Kenneth J. Leedle +6
In this paper we present proof of principle experiments of an optical gating concept for free electrons. We demonstrate a temporal resolution of 1.2+-0.3 fs via energy and transver…
Overcoming Bifurcation Instability in High-Repetition-Rate Ho:YLF Regenerative Amplifiers
Peter Kroetz, Axel Ruehl, Gourab Chatterjee +7
We demonstrate a Ho:YLF regenerative amplifier (RA) overcoming bifurcation instability and consequently achieving high extraction energies of 6.9 mJ at a repetition rate of 1 kHz w…
Low Noise, tunable Ho:fiber Soliton Oscillator for Ho:YLF Amplifier Seeding
Peng Li, Axel Ruehl, Colleen Bransley +1
We present a passively mode-locked, tunable soliton Ho:fiber ring oscillator, optimized for seeding of Ho:YLF amplifiers. The oscillator is independently tunable in central wavelen…
Widely-tunable mid-IR frequency comb source based on difference frequency generation
Axel Ruehl, Alessio Gambetta, Ingmar Hartl +3
We report on a mid-infrared frequency comb source of unprecedented tunability covering the entire 3-10 μm molecular fingerprint region. The system is based on difference frequency…
Direct Frequency Comb Spectroscopy in the Extreme Ultraviolet
Arman Cingoz, Dylan C. Yost, Thomas K. Allison +4
Development of the optical frequency comb has revolutionised metrology and precision spectroscopy due to its ability to provide a precise and direct link between microwave and opti…