Multipass cell for mJ-level, sub-two cycle nonlinear pulse compression with >100W average power at 1.9 µm DOI
Ziyao Wang,

Warunya Röder,

Tobias Heuermann

et al.

Published: Jan. 1, 2024

In this work, we present a nonlinear post-compression with an average power exceeding 100 W based on gas-filled multipass cell providing sub-two-cycle pulses. It is enabled by thulium-doped fiber chirped-pulsed amplification system.

Language: Английский

Average-Power Scaling of In-band Pumped, Tm-doped, Fiber Laser Systems for High Peak Power Pulsed Operation DOI Creative Commons

Mathias Lenski,

Qian Xu,

Philipp Gierschke

et al.

Optics Express, Journal Year: 2025, Volume and Issue: 33(7), P. 16029 - 16029

Published: Feb. 18, 2025

This contribution explores the average-power scaling potential of in-band pumped, Thulium (Tm-) doped fiber amplifiers for high peak-power operation. These results have been obtained by pumping a Tm-doped, photonic crystal at wavelength around 1700nm. In one experiments reported in this work an average output power 242 W with slope efficiency 80% was obtained. Additionally, we also demonstrate operation up to 80 no need active cooling, which further highlights benefits low-quantum defect pump approach. Furthermore, our simulation reveals these systems multi-kilowatt level.

Language: Английский

Citations

0
Coherent nanoscale imaging and chemical mapping with compact extreme ultraviolet and soft x-ray sources: Review and perspective DOI Creative Commons
Wilhelm Eschen, Robert Klas, Daniel S. Penagos Molina

et al.

APL Photonics, Journal Year: 2025, Volume and Issue: 10(5)

Published: May 1, 2025

Short-wavelength radiation in the extreme ultraviolet (XUV) and soft x-ray spectral regions offers unique advantages for imaging. With wavelengths ranging from a few nanometers to tens of nanometers, these techniques enable spatial resolutions at nanometer scale. In addition, penetration depths solids this regime non-destructive imaging internal structures micrometer-thick objects, surpassing capabilities electron microscopy. Furthermore, diverse atomic absorption edges characteristic region high-contrast without any staining or labeling. When combined with quantitative phase-sensitive techniques, even material identification nanoscale becomes feasible. This article reviews some latest advancements field. It provides an overview available tabletop sources discusses concepts state-of-the-art results two complementary techniques: XUV ptychography coherence tomography. While achieves lateral resolution, tomography enables axial resolution. Both allow mapping chemical composition samples, facilitating localized analysis compositions integrated circuits microorganisms. The also presents perspective on future developments time-resolved 3D potential application fields.

Language: Английский

Citations

0
Highly efficient nonlinear compression of mJ pulses at 2 μm wavelength to 20 fs in a gas-filled multi-pass cell DOI Creative Commons
Lucas Eisenbach, Ziyao Wang, Jan Schulte

et al.

Journal of Physics Photonics, Journal Year: 2024, Volume and Issue: 6(3), P. 035015 - 035015

Published: May 16, 2024

Abstract Within this work we demonstrate the highly efficient nonlinear spectral broadening and subsequent temporal compression of 1.49 mJ pulses at 101 kHz repetition rate from an ultrafast thulium-doped fiber laser system employing a gas-filled multi-pass cell (MPC). To achieve broadening, use krypton helium-filled Herriott-type MPC with reflective broadband dielectric mirrors. The spectrally broadened are subsequently compressed using fused-silica plates, resulting in pulse duration 20 fs overall excellent transmission 96%. Furthermore, beam quality is preserved up to maximum output power 144 W. It provides, best our knowledge, highest average few-cycle 2 µ m wavelength almost 10 times more energy 3 than previous MPCs, enabling future secondary source experiments.

Language: Английский

Citations

2
Highly efficient, ultra-broadband mid infrared generation driven by a Tm-doped fiber laser system DOI

Tobias Heuermann,

Ziyao Wang,

Mathias Lenski

et al.

Published: March 12, 2024

We present on the nonlinear downconversion of a post-compressed Tm-doped fiber laser system via intrapulse difference frequency generation. In preliminary experiment, with sampled 15 fs driving pulses and 3 mm Gallium Selenide crystal, we achieved an octave spanning spectrum (5-16 μm) conversion efficiency 3.6%. Utilizing full 100 W power, believe that this approach can pave way towards W-class emission in molecular fingerprint region enabling unprecedented sensitivity precision future spectroscopic applications.

Language: Английский

Citations

1
Efficient single-cycle mid-infrared femtosecond laser pulse generation by spectrally temporally cascaded optical parametric amplification with pump energy recycling DOI
Hao Yuan, Pei Huang,

Tongyu Feng

et al.

Optics Letters, Journal Year: 2024, Volume and Issue: 49(9), P. 2269 - 2269

Published: March 21, 2024

We proposed spectrally temporally cascaded optical parametric amplification (STOPA) using pump energy recycling to simultaneously increase spectral bandwidth and conversion efficiency in (OPA). Using BiB 3 O 6 KTiOAsO 4 nonlinear crystals, near-single-cycle mid-infrared (MIR) pulses with maximum efficiencies exceeding 25% were obtained simulations. successfully demonstrated sub-two-cycle, CEP-stable pulse generation at 1.8 µm a four-step STOPA system the experiment. This method provides solution solve limitations of gain crystals low broadband OPA systems, which is helpful for intense attosecond strong laser field physics studies.

Language: Английский

Citations

1
Active fibers for 2 µm fiber lasers DOI
Pavel Peterka, Ivan Kašı́k, Ondřej Podrazký

et al.

Laser Congress 2020 (ASSL, LAC), Journal Year: 2023, Volume and Issue: unknown, P. ATh4A.1 - ATh4A.1

Published: Jan. 1, 2023

Recent advances in thulium and holmium doped fibers are reviewed with focus on the design of highly efficient cladding-pumped effect temperature-dependent spectroscopic parameters high-power fiber laser operation.

Language: Английский

Citations

1
Pulse compression in a multipass cell delivering 100 W, mJ-level, two-cycle pulses at 1.9 μm wavelength DOI
Ziyao Wang,

Tobias Heuermann,

Yi Zhang

et al.

Published: Jan. 1, 2024

We report on the nonlinear pulse compression in a gas-filled multipass cell, delivering mJ-level, two-cycle pulses at 1.9 μm wavelength with 100 W average power kHz repetition rate.

Language: Английский

Citations

0
基于BBO晶体的电光取样探测技术在近红外少周期激光脉冲探测中的应用 DOI

王婧仪 Wang Jingyi,

李强爽 Li Qiangshuang,

孙长明 Sun Changming

et al.

Laser & Optoelectronics Progress, Journal Year: 2024, Volume and Issue: 61(13), P. 1314003 - 1314003

Published: Jan. 1, 2024

Citations

0
TW-scale few-cycle short-wave infrared laser based on nonlinear compression in a large-core gas-filled hollow core fiber DOI

Renyu Feng,

Junyu Qian,

Yujie Peng

et al.

Applied Physics Letters, Journal Year: 2024, Volume and Issue: 125(8)

Published: Aug. 19, 2024

In this Letter, we present the generation of terawatt-scale few-cycle short-wave infrared (SWIR) lasers using nonlinear compression in a large-core gas-filled hollow core fiber. Through experimental verification, investigate energy scaling properties and pulse propagation argon-filled At static pressure, system delivers pulses with 5.55 mJ/9.04 fs at central wavelength 1.45 μm, resulting peak power about 0.5 TW. Subsequently, based on chirped input pressure gradient, two-cycle SWIR 9.52 mJ/10.65 fs, record 0.7 This study marks crucial advancement field ultra-intense, ultrashort interaction platforms. high-energy, source has significant applications high-intensity THz radiation, x-ray generation, other fields strong-field physics.

Language: Английский

Citations

0
A B-integral managing strategy with multi-stage SCF amplifier: towards direct power scaling of femtosecond sources near 2 μm DOI
Haohai Yu, Jianlei Wang,

Yongguang zhao

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 26, 2024

Abstract Intense femtosecond laser pulses at 2 µm hold tremendous promise for applications ranging from fundamental scientific research particularly in high-order harmonic generation (HHG) and next-generation laser-driven particle accelerator, to industry life sciences. Compared with the well-designed chirped-pulse amplification (CPA) technique, direct is most predictable way realization of intense advantages simplicity compactness but suffered strong nonlinearity past tens years. Here, we propose a B-integral managing strategy manipulating nonlinear effects by employing discrete single-crystal fiber (SCF) configuration, enabling 2-µm high repetition rates without additional pulse picking, stretching compression. The system delivers > 56 W average power 75.45 MHz extremely extraction efficiency (> 55%) near diffraction-limited beam quality (M2 < 1.2). dynamic evolution optical spectra temporal properties amplifier reveals that detrimental are largely suppressed due low accumulated phase shift SCF layout. This straightforward, compact relatively simple approach expected open new route ultrashort kHz towards average/peak powers, thus exciting future prospects modern photonic regimes.

Language: Английский

Citations

0