Time-resolved ARPES with probe energy of 6.0 eV and tunable MIR pump at 250 kHz DOI Creative Commons
Adrien Longa, Jean-Michel Parent,

B. Frimpong

и другие.

Optics Express, Год журнала: 2024, Номер 32(17), С. 29549 - 29549

Опубликована: Июнь 24, 2024

In this paper, we present a laser source designed specifically for time- and angle-resolved photoemission spectroscopy (TR-ARPES) investigations of light-induced electron dynamics in quantum materials. Our is based on ytterbium-doped that seeds an optical parametric amplifier (OPA) followed by difference frequency generation (DFG) stage. This configuration enables the tunable near-infrared mid-infrared pulses (1.5 to 8 μm - 0.82 0.15 eV) at 250 kHz repetition rate, serving as pump TR-ARPES measurements. The remaining energy used generate ultraviolet 6 eV probe pulses, which prompt material emit photoelectrons. We demonstrate long-term stability source, well characterization beam profiles pulse durations. Additionally, preliminary results obtained Bi 2 Te 3 , prototypical 3D topological insulator. paper illustrates capability our electronic

Язык: Английский

Time-resolved ARPES studies of quantum materials DOI
Fabio Boschini, Marta Zonno, A. Damascelli

и другие.

Reviews of Modern Physics, Год журнала: 2024, Номер 96(1)

Опубликована: Фев. 27, 2024

Time-resolved angle-resolved photoemission spectroscopy provides access to light-induced changes in the electronic band structure and interactions of solids, out-of-equilibrium electron dynamics. This article reviews history future prospects for development technique, offers an overview recent achievements studying unoccupied light-driven states, photoinduced phase transitions, electron-phonon scattering, dynamics quantum materials, including topological insulators, unconventional superconductors, traditional novel semiconductors, excitonic spin-textured systems.

Язык: Английский

Процитировано

53

Cavity-enhanced high-order harmonic generation for high-performance time-resolved photoemission experiments DOI Creative Commons
Thomas K. Allison, A. Kunin, G. Schoenhense

и другие.

APL Photonics, Год журнала: 2025, Номер 10(1)

Опубликована: Янв. 1, 2025

Recent breakthroughs in high repetition-rate extreme ultraviolet (XUV) light sources and photoelectron analyzers have led to dramatic advances the performance of time-resolved photoemission experiments. In this perspective article, we discuss application cavity-enhanced high-order harmonic generation, with repetition rates exceeding 10 MHz, experiments using advanced endstations incorporating time-of-flight analyzers. We recent results, on future areas for further technological improvement, wide array science enabled by ultrafast XUV experiments, now a qualitatively new regime.

Язык: Английский

Процитировано

2

Time-resolved momentum microscopy with fs-XUV photons at high repetition rates with flexible energy and time resolution DOI Creative Commons
Karl Schiller, Lasse Sternemann, Matija Stupar

и другие.

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Янв. 29, 2025

Time-resolved momentum microscopy is an emerging technique based on photoelectron spectroscopy for characterizing ultrafast electron dynamics and the out-of-equilibrium electronic structure of materials in entire Brillouin zone with high efficiency. In this article, we introduce a setup time-resolved energy-filtered microscope coupled to custom-made high-harmonic generation photon source driven by multi-100 kHz commercial Yb-ultrafast laser that delivers fs pulses extreme ultraviolet range. The includes nonlinear pulse compression stage employing spectral broadening Herriott-type bulk-based multi-pass cell. This element allows flexible tuning driving duration, providing versatile featuring two operational modes designed enhance either energy or time resolution. We show capabilities system tracing conduction band valleys bulk crystal 2D semiconductor WS2. Using uncompressed pulses, demonstrate resolution better than (107 ± 2) meV, while compressed lead (48.8 17) fs.

Язык: Английский

Процитировано

1

Ultrafast dynamics of hot carriers: Theoretical approaches based on real-time propagation of carrier distributions DOI
Jelena Sjakste, Raja Sen,

Nathalie Vast

и другие.

The Journal of Chemical Physics, Год журнала: 2025, Номер 162(6)

Опубликована: Фев. 10, 2025

In recent years, computational approaches which couple density functional theory (DFT)-based description of the electron–phonon and phonon–phonon scattering rates with Boltzmann transport equation have been shown to obtain electron thermal characteristics many 3D 2D semiconductors in excellent agreement experimental measurements. At same time, progress DFT-based has also allowed describe non-equilibrium relaxation dynamics hot or photo-excited electrons several materials, very good time-resolved spectroscopy experiments. latter case, as techniques provide possibility monitor transient material evolving on femtosecond attosecond time scales, evolution photo-excited, nonthermal carrier distributions be described. Similarly, reliable theoretical are needed properties devices involving high energy carriers. this review, we aim discuss coupling ab initio especially that scattering, time-dependent describing out-of-equilibrium distributions, context experiments well simulations. We point out limitations common all numerical approaches, propagation strongly methods used overcome them.

Язык: Английский

Процитировано

0

Analysis methodology of coherent oscillations in time- and angle-resolved photoemission spectroscopy DOI
N. Gauthier, Hadas Soifer, Jonathan A. Sobota

и другие.

Review of Scientific Instruments, Год журнала: 2025, Номер 96(2)

Опубликована: Фев. 1, 2025

Oscillatory signals from coherently excited phonons are regularly observed in ultrafast pump–probe experiments on condensed matter samples. Electron–phonon coupling implies that coherent also modulate the electronic band structure. These oscillations can be probed with energy and momentum resolution using time- angle-resolved photoemission spectroscopy (trARPES), which reveals orbital dependence of electron–phonon for a specific phonon mode. However, comprehensive analysis remains challenging when multiple modes couple to bands. Complex spectral line shapes due strong correlations quantum materials add this challenge. In work, we examine how frequency domain representation trARPES data facilitates quantitative We investigate intensity first moment distribution curves. Both quantities provide complementary information able distinguish binding energy, linewidth, intensity. analyze representative dataset transition metal dichalcogenide WTe2 construct composite spectra, intuitively illustrate much each is affected by show linearly chirped probe pulse generate extrinsic artifacts distinct intrinsic signal.

Язык: Английский

Процитировано

0

Ultrafast relaxation dynamics and nonequilibrium processes in graphite DOI
Hao-Hsiang Jia, Yuki Nakata, S. Souma

и другие.

Physical review. B./Physical review. B, Год журнала: 2025, Номер 111(19)

Опубликована: Май 28, 2025

Язык: Английский

Процитировано

0

High harmonic generation from electrons moving in topological spin textures DOI
Atsushi Ono, Shun Okumura, Shohei Imai

и другие.

Physical review. B./Physical review. B, Год журнала: 2024, Номер 110(12)

Опубликована: Сен. 6, 2024

Язык: Английский

Процитировано

2

Toward Direct Exploration of the Few-Femtosecond Dynamics of Electronic Coherence and Correlation in Quantum Materials Using Time- and Angle-Resolved Photoemission Spectroscopy DOI Creative Commons
Kai Roßnagel, Michael Bauer

Crystals, Год журнала: 2024, Номер 14(5), С. 404 - 404

Опубликована: Апрель 26, 2024

Over the last two decades, time- and angle-resolved photoemission spectroscopy (trARPES) has become a mature established experimental technique for study of ultrafast electronic structural dynamics in materials. To date, most trARPES investigations have focused on investigation processes occurring time scales ≳30 fs, particular, relaxation thermalization, therefore been blind to initial sub-10 fs related coherence correlation effects. In this article, we illustrate how current setups reach their limits when it comes addressing such extraordinarily short present an configuration that provides time, energy, momentum resolutions required monitor few-femtosecond relevant energy scales. We discuss potential capabilities experiment response materials strong-field interaction regime at PHz frequencies finally review theoretical concept may future even overcome competing resolution limitations experiments, as imposed by time–bandwidth product probing laser pulse. Our roadmap indicates path break new ground quantum nonequilibrium dynamics, from which possibilities control optical signals can be explored.

Язык: Английский

Процитировано

1

Reversely Exploring Higher-Order Effects in a Fiber Laser through Physics-Informed Recursive Neural Network DOI
Jingxuan Sun, Yiqing Shu, Yanqi Ge

и другие.

ACS Photonics, Год журнала: 2024, Номер unknown

Опубликована: Сен. 6, 2024

Язык: Английский

Процитировано

1

Theoretical Description of Pump-Probe Experiments in Charge-Density-Wave Materials out to Long Times DOI Creative Commons
Marko D. Petrović, Manuel Weber, J. K. Freericks

и другие.

Physical Review X, Год журнала: 2024, Номер 14(3)

Опубликована: Сен. 25, 2024

We describe coupled nonequilibrium electron-phonon systems semiclassically—Ehrenfest dynamics for the phonons and quantum mechanics electrons—using a classical Monte Carlo approach that determines response to large pump field. The semiclassical is expected be accurate, because are excited average energies much higher than phonon frequency, eliminating need description. numerical efficiency of this method allows us perform self-consistent time evolution out very long times (tens picoseconds), enabling model pump-probe experiments charge-density-wave (CDW) material. Our system half-filled, one-dimensional (1D) Holstein chain exhibits CDW ordering due Peierls transition. subjected time-dependent electromagnetic field excites it equilibrium, then second probe pulse applied after delay. By evolving times, we capture complete process lattice excitation subsequent relaxation new an exchange energy between electrons lattice, leading at finite temperatures. employ indirect (impulsive) driving mechanism by direct electrons. identify two regimes, where can either cause small perturbations or completely invert initial order. work successfully describes ringing amplitude mode in has been seen experiment but never explained microscopic theory. also fluence-dependent crossover inverts order parameter changes dynamics. Finally, illustrate how examine number different types including photoemission, x-ray diffraction, two-dimensional (2D) spectroscopy. Published American Physical Society 2024

Язык: Английский

Процитировано

1