A5028716441- Advanced Fiber Laser Technologies
- Laser-Matter Interactions and Applications
- Photonic Crystal and Fiber Optics
- Laser-Plasma Interactions and Diagnostics
- Optical Network Technologies
- Laser Design and Applications
- Solid State Laser Technologies
- Laser Material Processing Techniques
- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Laser-induced spectroscopy and plasma
GSI Helmholtz Centre for Heavy Ion Research
2022-2024
Deutsches Elektronen-Synchrotron DESY
2020-2024
Helmholtz Institute Jena
2020-2024
University of Rochester
2017-2018
In this work, we demonstrate postcompression of 1.2 ps laser pulses to 13 fs via gas-based multipass spectral broadening. Our results yield a single-stage compression factor about 40 at 200 W in-burst average power and total <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mo>></mml:mo> </mml:mrow> <mml:mn>90</mml:mn> </mml:math> reduced power. The employed scheme represents route toward compact few-cycle sources driven by...
As ultrafast laser technology advances towards ever higher peak and average powers, generating sub-50 fs pulses from architectures that exhibit best power-scaling capabilities remains a major challenge. Here, we present very compact highly robust method to compress 1.24 ps 39 by means of only single spectral broadening stage which neither requires vacuum parts nor custom-made optics. Our approach is based on the hybridization multiplate continuum multipass cell techniques. Their combination...
Post-compression methods for ultrafast laser pulses typically face challenging limitations, including saturation effects and temporal pulse breakup, when large compression factors broad bandwidths are targeted. To overcome these we exploit direct dispersion control in a gas-filled multi-pass cell, enabling, the first time to best of our knowledge, single-stage post-compression 150 fs up 250 µJ energy from an ytterbium (Yb) fiber down sub-20 fs. Dispersion-engineered dielectric cavity mirrors...
Abstract The serrodyne principle enables an electromagnetic signal to be frequency shifted by applying a linear phase ramp in the time domain. This phenomenon has been exploited shift signals radiofrequency, microwave and optical regions of spectrum over ranges up few gigahertz, for example, analyse Doppler radiofrequency noise suppression stabilization. Here we employ this centre high-power femtosecond laser pulses range several terahertz with help nonlinear multi-pass cell. We demonstrate...
Tailoring the properties of driving laser to need applications often requires compromises among stability, high peak and average power levels, pulse duration, spectral bandwidth. For instance, spectroscopy with optical frequency combs in extreme/visible ultraviolet region a near-IR laser, therefore power, duration few tens fs, maximal available Contrarily, parametric conversion efficiency is higher for pulses 100-fs range due temporal walk-off coating limitations. Here we suggest an approach...
We investigate numerically the effect of Raman scattering on interaction two temporally separated pulses with identical spectra that propagate inside a single-mode fiber as fundamental solitons. take into account all interpulse terms in generalized nonlinear Schrödinger equation and study interplay between Kerr, intrapulse Raman, effects. observe considerable differences from well-known two-soliton behavior caused by Kerr nonlinearity. detail mechanism for net energy transfer leading pulse...
The nonlinear interaction of two temporally separated solitons inside optical fibers has been studied in the scalar case which both remain linearly polarized during their mutual interaction. Here we consider arbitrarily vector birefringent where they interact nonlinearly. We develop a general formalism based on coupled Schr\"odinger equations that include Raman and Kerr nonlinearities. use it to study how evolve temporal, spectral, polarization domains exhibiting no, medium, or large...
This paper reports on nonlinear spectral broadening of 1.1 ps pulses in a gas-filled multi-pass cell to generate sub-100 fs optical at 1030 nm and 515 pulse energies 0.8 mJ 225 µJ, respectively, for pump–probe experiments the free-electron laser FLASH. Combining 100 kHz Yb:YAG with 180 W in-burst average power post-compression platform enables reaching simultaneously high powers short durations high-repetition-rate FEL experiments.
We develop a general formalism for investigating the evolution of arbitrarily polarized short pulses inside birefringent optical fiber. use it to numerically study formation dispersive wave fibers exhibiting medium high birefringence when pulse is launched such that propagates as vector soliton. also investigate polarization both soliton and generated by it. The results show that, while controlled linear fiber, affected considerably nonlinear birefringence. coupled equations we solve include...
As Yb-based ultrafast laser systems are gaining importance due to their high average power compatibility while operating at repetition rates, spectral broadening techniques employed overcome limit in pulse duration. For this purpose, multi-pass cells (MPCs) have emerged as an attractive solution providing efficiency, large compression ratios, compact setup sizes and excellent beam quality [1]. However, the few-cycle regime has only been achieved cascaded arrangements of MPCs [2].
An Ytterbium laser is compressed to sub-20fs by a single-stage multi-pass cell and used produce tunable ultraviolet resonant dispersive wave (RDW) emission in hollow-core fibre at 50kHz repetition rate 12.5W average power.
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 factor about 40 at 200 W in-burst average power and total >90 reduced power. The employed scheme represents route towards compact few-cycle sources driven by industrial-grade Yb:YAG lasers high
We report nonlinear pulse compression of 1.2-ps, 2-mJ pulses. For spectral broadening, we use a Kr-filled Herriott-type cell with 22-roundtrips. After chirped-mirror compressor, measure 30-fs pulses, 80% transmission and an M 2 1.5×1.7.
We report post-compression of 1.2 ps pulses into the few-cycle regime via multi-pass spectral broadening. achieve compression factors 40 in single and 93 a dual stage scheme using compact setup.
We demonstrate post-compression of 1.2 ps pulses to the few-cycle regime via multi-pass spectral broadening. achieve compression factors 40 single and >90 dual stage employing mJ pulses.
We demonstrate sub-20 fs single-stage post-compression of an Ytterbium-doped fiber laser. Dispersion-engineered dielectric cavity mirrors are used to control spectral broadening in a gas-filled multi-pass cell supporting throughput 98%.
We report on 100-W 132 MHz Yb:fiber amplifier seeded by a low noise oscillator. tune the laser spectrum to match it different applications while keeping properties and power performance of system.
The serrodyne principle enables shifting the frequency of an electromagnetic signal by applying a linear phase ramp in time domain [1]. This phenomenon has been exploited to frequency-shift signals radiofrequency (RF), microwave and optical region spectrum over ranges up few GHz e.g. analyse Doppler shift RF signals, for noise suppression stabilization [2-9]. Here, we employ this center high power femtosecond laser pulses range several THz with help nonlinear multi-pass cell. We demonstrate...
Post-compression methods for ultrafast laser pulses typically face challenging limitations including saturation effects and temporal pulse break-up when large compression factors broad bandwidths are targeted. To overcome these limitations, we exploit direct dispersion control in a gas-filled multi-pass cell, enabling the first time single-stage post-compression of 150 fs up to 250 uJ energy from an Ytterbium (Yb) fiber down sub-20 fs. Dispersion-engineered dielectric cavity mirrors used...
We introduce the combination of multi-pass cell and multi-plate spectral broadening. demonstrate compression 110-μJ pulses from 900-fs to 60-fs in a single stage report broadening 38-fs transform-limit by nonlinear mode-matching.
We demonstrate single-stage post-compression of an Ytterbium fiber laser to about 20 fs based on spectral broadening in a gas-filled multipass cell. A compression factor seven has been achieved with throughput 86%.
As Ultrafast laser technology advances towards ever higher peak and average powers, generating sub-50 fs pulses from architectures that exhibit best power-scaling capabilities remains a major challenge. Here, we present very compact highly robust method to compress 1.24 ps 39 by means of only single spectral broadening stage which neither requires vacuum parts nor custom-made optics. Our approach is based on the hybridization multi-plate continuum multi-pass cell techniques. Their...