Controlling photoionization using attosecond time-slit interferences

被引：7

作者：

Cheng, Yu-Chen ^{[1
]}

Mikaelsson, Sara ^{[1
]}

Nandi, Saikat ^{[1
]}

Ramisch, Lisa ^{[1
]}

Guo, Chen ^{[1
]}

Carlstrom, Stefanos ^{[1
]}

Harth, Anne ^{[1
]}

Vogelsang, Jan ^{[1
]}

Miranda, Miguel ^{[1
]}

Arnold, Cord L. ^{[1
]}

LHuillier, Anne ^{[1
]}

Gisselbrecht, Mathieu ^{[1
]}

机构：

[1] Lund Univ, Dept Phys, S-22100 Lund, Sweden

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2020年 / 117卷 / 20期

基金：

欧洲研究理事会; 瑞典研究理事会;

关键词：

photoelectric effect; attosecond pulses; photoionization; electron momentum spectroscopy; MOMENTUM SPECTROSCOPY; RECOIL-ION; RADIATION; IONIZATION; DELAY;

D O I：

10.1073/pnas.1921138117

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

When small quantum systems, atoms or molecules, absorb a high-energy photon, electrons are emitted with a well-defined energy and a highly symmetric angular distribution, ruled by energy quantization and parity conservation. These rules are based on approximations and symmetries which may break down when atoms are exposed to ultrashort and intense optical pulses. This raises the question of their universality for the simplest case of the photoelectric effect. Here we investigate photoionization of helium by a sequence of attosecond pulses in the presence of a weak infrared laser field. We continuously control the energy of the photoelectrons and introduce an asymmetry in their emission direction, at variance with the idealized rules mentioned above. This control, made possible by the extreme temporal confinement of the light-matter interaction, opens a road in attosecond science, namely, the manipulation of ultrafast processes with a tailored sequence of attosecond pulses.

引用

页码：10727 / 10732

页数：6

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