A5059145409- Laser-Matter Interactions and Applications
- Spectroscopy and Quantum Chemical Studies
- Mass Spectrometry Techniques and Applications
- Laser-Plasma Interactions and Diagnostics
- Advanced Fiber Laser Technologies
- Quantum Information and Cryptography
- Terahertz technology and applications
- Advanced Chemical Physics Studies
- Nuclear physics research studies
- Molecular spectroscopy and chirality
- Spectroscopy and Laser Applications
- Photonic Crystals and Applications
- Atomic and Molecular Physics
- Photonic and Optical Devices
Chinese Academy of Sciences
2021-2025
University of Chinese Academy of Sciences
2022-2025
Wuhan Institute of Physics and Mathematics
2021-2025
State Key Laboratory of Magnetism
2024
Quantum coherence of collective states plays a pivotal role in understanding many-body cooperative behaviors. Collective coherences between the ground state and excited potassium atoms were previously revealed; however, collectively has hitherto been overlooked, its observation remained challenging. Here we present joint experimental theoretical investigation effects K atomic vapor using two-dimensional coherent spectroscopy. By collecting zero-quantum, double-quantum,...
Attoclock provides a powerful tool for probing the ultrafast electron dynamics in strong laser fields. However, this technique has remained restricted to single or sequential double ionized dynamics. Here, we propose novel attoclock scheme with polarization-gated few-cycle pulse and demonstrate its application timing correlated-electron emission field ionization of argon. Our experimental measurements reveal that occurs mainly through two channels time differences 234±22 as 1043±73 as,...
We investigate high harmonic generation (HHG) of an atom in the presence squeezed vacuum a single mode. Based on fully quantum time-dependent Schrödinger equation, we derive analytical formula for amplitude. Our simulations HHG spectrum with this show that amplitude corresponding mode can undergo significant changes different parameters vacuum. Using time-frequency analysis method, physics underlying effects fluctuation (VQF) is revealed, which found to be consistent explanation Fermi's...
The increasing interest in chiral light stems from its spiral trajectory along the propagation direction, facilitating interaction between different polarization states of and matter. Despite tremendous achievements light-related research, generation control pulses have presented enduring challenges, especially at terahertz ultraviolet spectral ranges, due to lack suitable optical elements for effective pulse manipulation. Conventionally, can be obtained intricate systems, by an external...
Using the semiclassical two-step model for strong-field ionization, we theoretically investigate subcycle interference structures in photoelectron momentum distribution. Specifically, focus on low-momentum fanlike structure. Employing a time-variable soft-core Coulomb potential, demonstrate that arises from between drifted and undrifted electrons opposite direct quarter cycles. We also find main scattering nuclear potential occurs just after ionization. Our findings suggest region of...
$S$-matrix theory and the Born expansion, lowest-order term of which is known as ``strong-field approximation'' (SFA), play an indispensable role in our understanding atomic molecular processes intense laser fields. Most phenomena this field are reproduced by first two terms series. However, for a long-range potential such Coulomb potential, second-order may be larger than SFA term, raising problem convergence By simultaneously measuring simulating ionization Rydberg-state excitation argon...
We report on a theoretical study of nonsequential double ionization (NSDI) magnesium atoms by circularly polarized intense laser pulses. introduce concise model considering the laser-induced dynamic core polarization, which is an often overlooked effect in understanding strong-field ionization. By tracing back electron trajectories, we demonstrate how ionic response to instantaneous field enhances NSDI probability, plays crucial role circular polarization. Furthermore, propose method extract...
Accessing precisely to the phase variation of electronic wave-packet (EWP) provides unprecedented spatiotemporal information microworld.A radial interference pattern at near-zero energy has been widely observed in experiments strong-field photoionization.However, underlying physical picture this is still under debate.Here we report an experimental and theoretical investigation low-energy structure (LEIS) mid-infrared laser fields.We clarify that LEIS arises due soft-recollision mechanism,...