Ultrafast thin-disk multipass amplifier with 720 mJ operating at kilohertz repetition rate for applications in atmospheric research

Optics Express, Journal Year: 2020, Volume and Issue: 28(20), P. 30164 - 30164

Published: Sept. 14, 2020

We present an ultrafast thin-disk based multipass amplifier operating at a wavelength of 1030 nm, designed for atmospheric research in the framework Laser Lightning Rod project. The CPA system delivers pulse energy 720 mJ and duration 920 fs repetition rate 1 kHz. 240 seed pulses generated by regenerative are amplified to final via four industrial laser heads. beam quality factor remains ∼ 2.1 output. First results on horizontal long-range filament generation presented.

Language: Английский

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Intense infrared lasers for strong-field science

Advances in Optics and Photonics, Journal Year: 2022, Volume and Issue: 14(4), P. 652 - 652

Published: Aug. 31, 2022

The advent of chirped-pulse amplification in the 1980s and femtosecond Ti:sapphire lasers 1990s enabled transformative advances intense laser–matter interaction physics. Whereas most experiments have been conducted limited near-infrared range 0.8–1 μm, theories predict that many physical phenomena such as high harmonic generation gases favor long laser wavelengths terms extending high-energy cutoff. Significant progress has made developing few-cycle, carrier-envelope phase-stabilized, high-peak-power 1.6–2 μm laid foundation for attosecond X ray sources water window. Even longer wavelength are becoming available suitable to study light filamentation, generation, laser–plasma relativistic regime. Long-wavelength sub-bandgap strong-field excitation a wide solid materials, including semiconductors. In limit, bulk crystals also produce high-order harmonics. this review, we first introduce several important scaling laws physics, then describe recent breakthroughs short- (1.4–3 μm), mid- (3–8 long-wave (8–15 μm) infrared technology, finally provide examples applications these novel lasers. Some broadband ultrafast will profound effects on medicine, environmental protection, national defense, because their cover absorption band, molecular fingerprint region, well atmospheric transparent

Language: Английский

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Bright, high-repetition-rate water window soft X-ray source enabled by nonlinear pulse self-compression in an antiresonant hollow-core fibre

Light Science & Applications, Journal Year: 2021, Volume and Issue: 10(1)

Published: Feb. 12, 2021

Abstract Bright, coherent soft X-ray radiation is essential to a variety of applications in fundamental research and life sciences. To date, high photon flux this spectral region can only be delivered by synchrotrons, free-electron lasers or high-order harmonic generation sources, which are driven kHz-class repetition rate with very peak powers. Here, we establish novel route toward powerful easy-to-use SXR sources presenting compact experiment nonlinear pulse self-compression the few-cycle regime combined phase-matched single, helium-filled antiresonant hollow-core fibre. This enables first 100 rate, table-top source that delivers an application-relevant 2.8 × 10 6 s −1 eV around 300 eV. The fibre integration temporal (leading formation necessary strong-field waveforms) pressure-controlled phase matching will allow compact, high-repetition-rate laser technology, including commercially available systems, drive simple cost-effective, high-flux sources.

Language: Английский

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Table-top optical parametric chirped pulse amplifiers: past and present

Opto-Electronic Advances, Journal Year: 2022, Volume and Issue: 6(3), P. 220046 - 220046

Published: Sept. 30, 2022

The generation of power- and wavelength-scalable few optical cycle pulses remains one the major challenges in modern laser physics. Over past decade, development table-top parametric chirped pulse amplification-based systems was progressing at amazing speed, demonstrating excellent performance characteristics terms duration, energy, peak power repetition rate, which place them front line ultrafast technology. At present, amplifiers comprise a unique class light sources, currently amplify octave-spanning spectra produce carrier-envelope phase-stable, with multi-gigawatt to multi-terawatt powers multi-watt average powers, carrier wavelengths spanning considerable range spectrum. This article gives an overview on state art amplifiers, addressing their relevant scientific technological aspects, provides short outlook practical applications growing field science.

Language: Английский

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Atomic, molecular and optical physics applications of longitudinally coherent and narrow bandwidth Free-Electron Lasers

Physics Reports, Journal Year: 2021, Volume and Issue: 904, P. 1 - 59

Published: Jan. 8, 2021

Language: Английский

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Long seed, short pump: converting Yb-doped laser radiation to multi-µJ few-cycle pulses tunable through 2.5–15 µm

Optics Express, Journal Year: 2022, Volume and Issue: 30(8), P. 13009 - 13009

Published: March 17, 2022

We present a setup for generating broadband (up to 1050 cm-1) and broadly tunable (2.5-15 µm) mid-infrared pulses using an Yb-doped femtosecond laser as the pump source. Our scheme, comprising two parametric amplifiers mixing stage, exploits favorable group velocity matching conditions in GaSe pumped at 2 µm directly produce sub-70 fs throughout tuning range without any additional dispersion compensation, while 30-50 pulse durations are achieved with simple compensation by propagation through thin bulk media. The generated have sub-1% short- long-term energy noise, well stable spectral parameters, delivering 0.5-2 W average mid-IR power. expect source be useful various spectroscopic applications mid-IR.

Language: Английский

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Ultrafast Tm-doped fiber laser system delivering 1.65-mJ, sub-100-fs pulses at a 100-kHz repetition rate

Optics Letters, Journal Year: 2022, Volume and Issue: 47(12), P. 3095 - 3095

Published: May 26, 2022

High-energy, ultrafast, short-wavelength infrared laser sources with high average power are important tools for industrial and scientific applications. Through the coherent combination of four ultrafast thulium-doped rod-type fiber amplifiers, we demonstrate a Tm-doped chirped pulse amplification system compressed energy 1.65 mJ 167 W output at repetition rate 101 kHz. The delivers 85 fs pulses peak 15 GW. Additionally, presents long- short-term stability. To best our knowledge, this is highest short wavelength IR, mJ-class source to date. This result shows potential beam combining techniques in spectral region scalability these systems.

Language: Английский

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Optical Waveform Synthesis and Its Applications

Laser & Photonics Review, Journal Year: 2023, Volume and Issue: 17(4)

Published: Jan. 31, 2023

Abstract The quest for ever‐shorter optical pulses has been ongoing over half a century. Although few‐cycle have generated nearly 40 years, pulse lengths below the single‐cycle limit remained an elusive goal long time. For this purpose, waveform synthesizers, generating high‐energy, high‐average‐power via coherent combination of multiple covering different spectral regions, recently developed. They allow unprecedented control waveforms, spanning extremely broad range from ultraviolet to infrared. Such allows steering strong‐field interactions with increased degrees freedom. When driving high‐harmonic generation, tailored waveforms can produce bright attosecond trains and even isolated tunable spectra up soft X‐ray range. In paper recent progress on parametric hollow‐core fiber synthesizers is discussed. Newly developed seeding schemes; absolute, relative, phase measurement; techniques suitable are described. serial parallel synthesis based Ti:sapphire Ytterbium laser systems their latest applications in generation gaseous solid media, science, wakefield acceleration

Language: Английский

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Mid-Infrared Few-Cycle Pulse Generation and Amplification

Photonics, Journal Year: 2021, Volume and Issue: 8(8), P. 290 - 290

Published: July 21, 2021

In the past decade, mid-infrared (MIR) few-cycle lasers have attracted remarkable research efforts for their applications in strong-field physics, MIR spectroscopy, and bio-medical research. Here we present a review of pulse generation amplification wavelength range spanning from 2 to ~20 μm. first section, brief introduction on importance ultrafast corresponding methods is provided. second different nonlinear crystals including emerging non-oxide crystals, such as CdSiP2, ZnGeP2, GaSe, LiGaS2, BaGa4Se7, well new periodically poled OP-GaAs OP-GaP are reviewed. Subsequently, third various techniques optical parametric amplification, chirped-pulse intra-pulse difference-frequency with all sorts designs, pumped by miscellaneous lasers, output specifications terms energy, average power, width addition, high-energy single-cycle pulses ideal tools isolated attosecond generation, electron dynamic investigation, tunneling ionization harness. Thus, fourth examples state-of-the-art work field reviewed discussed. last prospects high-fidelity molecule detection, cold tissue ablation

Language: Английский

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Above-mJ optical parametric chirped pulse amplifier at 3 μm for laser-driven coherent soft x-ray generation beyond the water window

APL Photonics, Journal Year: 2025, Volume and Issue: 10(4)

Published: April 1, 2025

Optical parametric chirped pulse amplification (OPCPA) provides an excellent platform to generate ultrashort mid-infrared pulses in the spectral window beyond scope of traditional mode-locked lasers. This technology has paved path toward tabletop coherent soft x-ray (SXR) sources recent years. Commercial availability high-power Yb:YAG lasers as pump enabled OPCPA high-energy femtosecond mid-IR at a high repetition rate. However, it is still difficult achieve above mJ, rate 3 μm with less than 100 fs pulsewidth. Here, we present 10 kHz, few-cycle 3.1 generating compressed 1.1 mJ energy record temporal width 58 and rms stability 0.8%. Our experimental results are further compared two different simulation codes for optimization. To increase efficiency, utilize pulse-front tilt matching configuration resulting 80% more first power stage expect up total all three stages. These open opportunity access, particular, magnetically dichroic L-absorption edges 3d metals through generation SXRs via harmonic water (500–900 eV) laboratory setup. prospect availing pump-probe spectroscopy SXR studying electronic structure dynamics numerous condensed phase systems resonant transitions from core levels functionally relevant without having resort large-scale facilities.

Language: Английский

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