Relativistic slingshot: A source for single circularly polarized attosecond x-ray pulses

Wang, J. W.; Bulanov, Sergei V.; Chen, Min; Lei, Bifeng; Zhang, Y. X.; Zagidullin, Rishat R.; Zorina, Veronika; Yu, Wei; Leng, Yuxin; Li, Ruxin; Zepf, M.; Rykovanov, S. G.

doi:10.1103/physreve.102.061201

Cited by 9 publications

(2 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this theoretical study, we propose time-resolved X-ray magnetic circular dichroism (tr-XMCD) to observe the excited state relaxation and the signatures of electronic coherence generated at conical intersections. MCD is the differential absorption of left and right circularly polarized light by a sample subjected to a uniform magnetic field parallel to the direction of the incident light’s propagation. − In this proposed tr-XMCD, the dynamics of molecule is initiated by a UV–visible pump and probed with attosecond circularly polarized X-ray pulses − in a uniform magnetic field. We demonstrate that tr-XMCD can effectively detect the electronic coherences generated at CoIn.…”

Section: Introductionmentioning

confidence: 99%

Direct Probe of Conical Intersection Photochemistry by Time-Resolved X-ray Magnetic Circular Dichroism

Sun,

Gu,

et al. 2024

J. Am. Chem. Soc.

View full text Add to dashboard Cite

The direct probing of photochemical dynamics by detecting the electronic coherence generated during passage through conical intersections is an intriguing challenge. The weak coherence signal and the difficulty in preparing purely excited wave packets that exclude coherence from other sources make it experimentally challenging. We propose to use time-resolved X-ray magnetic circular dichroism to probe the wave packet dynamics around the conical intersection. The magnetic field amplifies the relative strength of the electronic coherence signal compared to populations through the magnetic field response anisotropy. More importantly, since the excited state relaxation through conical intersections involves a change of parity, the magnetic coupling matches the symmetry of the response function with the electronic coherence, making the coherence signal only sensitive to the conical intersection induced coherence and excludes the pump pulse induced coherence between the ground state and excited state. In this theoretical study, we apply this technique to the photodissociation dynamics of a pyrrole molecule and demonstrate its capability of probing electronic coherence at a conical intersection as well as population transfer. We demonstrate that a magnetic field can be effectively used to extract novel information about electron and nuclear molecular dynamics.

show abstract

Section: Introductionmentioning

confidence: 99%

Direct Probe of Conical Intersection Photochemistry by Time-Resolved X-ray Magnetic Circular Dichroism

Sun,

Gu,

et al. 2024

J. Am. Chem. Soc.

View full text Add to dashboard Cite

show abstract

“…At oblique incidence, the different efficiencies of the s and p components of a CP laser result in lowellipticity attosecond pulses [15,27]. To overcome this limitation, a few advanced concepts have been proposed to generate attosecond pulses with high ellipticity, such as employing the strong charge separation field in an overdense plasma [14] or thin foils [28], precisely matching the ratio of the s and p components and the incident angle [15,29,30], or using special schemes of two-color CP lasers [31][32][33] or two polarizationperpendicular counter-propagating lasers [34]. All these proposed schemes employ solid targets and thus are naturally sensitive to the preplasma.…”

Section: Introductionmentioning

confidence: 99%

Circularly polarized attosecond pulses generation from laser interaction with magnetized sub-critical plasmas

Pan

Wang

Luan

et al. 2023

Plasma Phys. Control. Fusion

Self Cite

View full text Add to dashboard Cite

We propose a method to generate circularly polarized attosecond pulses by the interactions of a relativistic-intensity right-hand circularly polarized laser pulse and magnetized sub-critical plasma. It is theoretically and numerically demonstrated that when an external magnetic field with an appropriate strength is applied to a sub-critical plasma along the laser propagation, the ponderomotive force of a right-hand circularly polarized laser at the vacuum-plasma boundary is significantly enhanced. The electrons are then steadily pushed forward until the timely-increasing charge separation field becomes strong enough to pull them back, forming a dense and counter-moving electron sheet. The relativistic-velocity electron sheet works as a flying mirror to compress the tail of the driving laser and efficiently generate a single circularly polarized attosecond pulse. The present scheme shows a stable efficiency on different scale lengths of preplasma and thus may provide a robust way to generate bright and circularly polarized attosecond pulses.

show abstract

Bright attosecond polarized γ-ray emission from the interaction of an intense laser pulse with non-uniform near-critical-density plasma

Tang

2022

Chinese Journal of Physics

View full text Add to dashboard Cite

Relativistic slingshot: A source for single circularly polarized attosecond x-ray pulses

Cited by 9 publications

References 50 publications

Direct Probe of Conical Intersection Photochemistry by Time-Resolved X-ray Magnetic Circular Dichroism

Direct Probe of Conical Intersection Photochemistry by Time-Resolved X-ray Magnetic Circular Dichroism

Circularly polarized attosecond pulses generation from laser interaction with magnetized sub-critical plasmas

Bright attosecond polarized γ-ray emission from the interaction of an intense laser pulse with non-uniform near-critical-density plasma

Contact Info

Product

Resources

About