ACS Photonics, Journal Year: 2025, Volume and Issue: unknown
Published: March 21, 2025
Language: Английский
Nature Communications, Journal Year: 2020, Volume and Issue: 11(1)
Published: June 2, 2020
Abstract Recent progress in high power ultrafast short-wave and mid-wave infrared lasers has enabled gas-phase harmonic generation (HHG) the water window beyond, as well demonstration of HHG condensed matter. In this Perspective, we discuss recent advancements future trends generating characterizing soft X-ray pulses from extreme ultraviolet (XUV) solid-state HHG. Then, their current potential usage time-resolved study electron nuclear dynamics atomic, molecular matters.
Language: Английский
Citations
253
Nature Photonics, Journal Year: 2021, Volume and Issue: 15(4), P. 281 - 286
Published: March 11, 2021
Language: Английский
Citations
100
Laser & Photonics Review, Journal Year: 2022, Volume and Issue: 17(1)
Published: Oct. 26, 2022
Abstract The petawatt (PW) laser has experienced a rapid development in the past two decades, and tens of giant facilities have been constructed worldwide. After realizing 10–100 PW, it seems to be close some sort engineering limit but its focused peak intensity still is much lower than Schwinger limit, therefore technology improvements or innovations become indispensable for further increasing power as well intensity. By quick reviewing PW history, shown that reducing pulse duration near single optical cycle feasible (easy cheap) choice this purpose. Here, technologies optical‐cycle generation, ultrabroadband amplification, capability boosting aim provide possible approaches lasers are briefly reviewed discussed. Meanwhile, key bottlenecks challenge current future short‐pulse their solutions summarized This review aims roadmap next‐stage laser.
Language: Английский
Citations
47
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
Citations
42
Optics Express, Journal Year: 2020, Volume and Issue: 28(6), P. 8724 - 8724
Published: Feb. 25, 2020
We developed a high power optical parametric chirped-pulse amplification (OPCPA) system at 2.1 µm harnessing 500 W Yb:YAG thin disk laser as the only pump and signal generation source. The OPCPA operates 10 kHz with single pulse energy of up to 2.7 mJ duration 30 fs. maximum average output 27 sets new record for an in 2 wavelength region. soft X-ray continuum generated through harmonic this driver can extend around 0.55 keV, thus covering entire water window (284 eV - 543 eV). With repetition rate still enabling pump-probe experiments on solid samples, be used many applications.
Language: Английский
Citations
56
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
Citations
52
Journal of Physics B Atomic Molecular and Optical Physics, Journal Year: 2021, Volume and Issue: 54(9), P. 094001 - 094001
Published: May 5, 2021
Abstract The electric dipole approximation is widely used in atomic, molecular and optical physics typically related to a regime for which the wavelength much larger than atomic structure. However, studies have shown that strong laser fields another exists where breaks down. During ionization process intense at long wavelengths photoelectrons can reach higher velocities such magnetic field component of becomes significant. dynamics final momentum electron therefore modified by entire Lorentz force. In contrast interaction neglected approximation. Rapid developments technology advancements accuracy measurements techniques enabled observation influence non-dipole effects on angular photoelectron distributions. More recently number beyond has increased significantly, providing more important insight into fundamental properties processes. For example we three dimensional spectra significantly affected drift with parent–ion interaction, linear multiphoton transfer sub-cycle time scale sharing transferred photon momenta between ion. this article present an overview underlying mechanisms review experimental achievements field. We focus not valid but fully relativistic description required.
Language: Английский
Citations
43
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
Citations
32
Structural Dynamics, Journal Year: 2024, Volume and Issue: 11(1)
Published: Jan. 1, 2024
Novel ultrafast x-ray sources based on high harmonic generation and at free electron lasers are opening up new opportunities to resolve complex processes in condensed phase systems with exceptional temporal resolution atomic site specificity. In this perspective, we present techniques for resolving charge localization, transfer, separation organic semiconductors photovoltaic devices time-resolved soft spectroscopy. We review recent results spectroscopy of these discuss routes overcome the technical challenges performing experiments photosensitive materials poor thermal conductivity low pump intensity thresholds nonlinear effects.
Language: Английский
Citations
8
Optics Letters, Journal Year: 2020, Volume and Issue: 45(21), P. 5998 - 5998
Published: Sept. 28, 2020
A table-top midwave-infrared optical parametric chirped pulse amplification (OPCPA) system generates few-cycle pulses with multi-10 GW peak power at a 1 kHz repetition rate. The all-optically synchronized utilizes ZnGeP2 nonlinear crystals and highly stable 2 µm picosecond pump laser based on Ho:YLiF4. An excellent energy extraction is achieved by reusing the after third stage, resulting in 3.4 mJ idler center wavelength of 4.9 µm. Pulses as short 89.4 fs are achieved, close to only five cycles. Taking into account energy, record high 33 for high-energy mid-IR OPCPAs beyond 4 demonstrated.
Language: Английский
Citations
50