Dynamic interference in below-threshold ionization

Tóth, Attila and Borbély, Sándor and Csehi, András (2023) Dynamic interference in below-threshold ionization. PHYSICAL REVIEW A, 108 (6). No. L061101. ISSN 2469-9926

Preview

Text PRALett-accepted.pdf - Accepted Version Download (3MB) | Preview

Abstract

We study the temporal interference of photoelectrons emitted during the rising and falling edges of intense femtosecond laser pulses, that can ionize atoms via near-resonant transitions. Due to the near-resonant coupling with the laser pulse, the emerging atomic dressed states repel each other, giving rise to the Rabi splitting that is primarily controlled by the laser intensity and detuning. Our numerical and analytical analysis reveals that dynamic interference is observed when the Rabi splitting of the dressed states is maximized meanwhile the ionization of the atom remains small. We demonstrate that these two conditions are fulfilled when the atom is driven off-resonantly within the one-Rabi-cycle regime at perturbative laser intensities. As a result, the single peak of the photoelectron spectrum found in the weak-field limit is replaced by a pronounced multi-peak pattern.

Actions (login required)

Edit Item