High-harmonic generation driven by quantum light

Gorlach, Alexey; Tzur, Matan Even; Birk, Michael; Krüger, Michael; Rivera, Nicholas; Cohen, Oren; Kaminer, Ido

doi:10.1038/s41567-023-02127-y

Cited by 45 publications

(5 citation statements)

References 50 publications

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“…Additionally, the establishment of a fullquantum description has aroused rapidly increasing attention in the strong-field [50][51][52][53]. For example, Gorlach et al [53] found that the defining spectral characteristics of HHG, such as the plateau and cutoff, remain unchanged as the laser field is treated as a Fock state, which agrees with our previous results [39,41].…”

Section: Theoretical Methodssupporting

confidence: 86%

“…Secondly, as we mentioned in the introduction, that the S-matrix formula based on solving the time-domain Schrödinger equation with a classical field had been obtained directly by the transition equation of the frequency-domain theory for HHG processes [39] and HATI [42]. Additionally, the establishment of a fullquantum description has aroused rapidly increasing attention in the strong-field [50][51][52][53]. For example, Gorlach et al [53] found that the defining spectral characteristics of HHG, such as the plateau and cutoff, remain unchanged as the laser field is treated as a Fock state, which agrees with our previous results [39,41].…”

Section: Theoretical Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Imagining density distribution of molecular orbitals in IR+XUV co-rotating circular laser fields by frequency-domain theory

Li,

Jin,

Yang

et al. 2024

J. Phys. B: At. Mol. Opt. Phys.

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We have investigated the angle-resolved ATI spectrum of oriented molecules in the IR+XUV co-rotating circular laser fields. According to the different roles of IR and XUV laser in the ionization process, we purposefully adjust the photon energy of XUV and the intensity of IR laser to make the ionization spectrum of the molecule distributed in a suitable momentum region. Moreover, under the same laser conditions, the background fringes in the ionization spectrum of the molecule can be removed by using the ionization spectrum of the atom with the same ionization energy as the molecule, so that the molecular orbital density distribution in the suitable momentum region can be obtained. That is, for any unknown molecule, as long as the ionization energy of the molecule can be measured, the density distribution of the molecular orbital can be imaged in a definite momentum region by adjusting the laser field conditions, which may shed light on the experimental detection of molecular orbitals.

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Section: Theoretical Methodssupporting

confidence: 86%

Section: Theoretical Methodsmentioning

confidence: 99%

Imagining density distribution of molecular orbitals in IR+XUV co-rotating circular laser fields by frequency-domain theory

Li,

Jin,

Yang

et al. 2024

J. Phys. B: At. Mol. Opt. Phys.

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show abstract

“…Most interestingly, owing to the nature of the IR waveforms, clean IAPs are continuously emitted for a wide range of driver CEPs, resulting in a CEP-robust scheme which is also stable under macroscopic propagation of the high harmonics in a gas target. Our results open the door to a new generation of HCF-based IAP sources for ultrafast applications and also provide a compact tool to explore the role of isolated attosecond pulses in recent works of quantum HHG. , …”

Section: Introductionmentioning

confidence: 83%

Robust Isolated Attosecond Pulse Generation with Self-Compressed Subcycle Drivers from Hollow Capillary Fibers

Galán,

Serrano,

Jarque

et al. 2024

ACS Photonics

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High-order harmonic generation (HHG) arising from the nonperturbative interaction of intense light fields with matter constitutes a well-established tabletop source of coherent extreme-ultraviolet and soft X-ray radiation, which is typically emitted as attosecond pulse trains. However, ultrafast applications increasingly demand isolated attosecond pulses (IAPs), which offer great promise for advancing precision control of electron dynamics. Yet, the direct generation of IAPs typically requires the synthesis of near-single-cycle intense driving fields, which is technologically challenging. In this work, we theoretically demonstrate a novel scheme for the straightforward and compact generation of IAPs from multicycle infrared drivers using hollow capillary fibers (HCFs). Starting from a standard, intense multicycle infrared pulse, a light transient is generated by extreme soliton self-compression in a HCF with decreasing pressure and is subsequently used to drive HHG in a gas target. Owing to the subcycle confinement of the HHG process, high-contrast IAPs are continuously emitted almost independently of the carrier-envelope phase (CEP) of the optimally self-compressed drivers. This results in a CEP-robust scheme which is also stable under macroscopic propagation of the high harmonics in a gas target. Our results open the way to a new generation of integrated all-fiber IAP sources, overcoming the efficiency limitations of usual gating techniques for multicycle drivers.

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“…In addition to the advancements in exploring quantum dynamics at ever faster rates and on ever shorter timescales, interdisciplinary integration with other fields holds promising prospects, leading to ultrafast chemistry, [3,170,171] ultrafast nanophysics, [172,173] and ultrafast quantum information science, [174][175][176][177][178][179] offering fertile ground for innovative research. Continued exploration in the realm of ultrafast science promises an ever broader scope, contributing to the expansion of human knowledge on an ever increasing scale.…”

Section: Summary and Perspectivementioning

confidence: 99%

Attosecond ionization time delays in strong-field physics

Ma 马,

Ni 倪,

Wu 吴

2024

Chinese Phys. B

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Electronic processes within atoms and molecules reside on the timescale of attoseconds. Recent advances in the laser-based pump-probe interrogation techniques have made possible the temporal resolution of ultrafast electronic processes on the attosecond timescale, including photoionization and tunneling ionization. These interrogation techniques include the attosecond streak camera, the reconstruction of attosecond beating by interference of two-photon transitions, and the attoclock. While the former two are usually employed to study photoionization processes, the latter is typically used to investigate tunneling ionization. In this Topical Review, we briefly overview these timing techniques towards an attosecond temporal resolution of ionization processes in atoms and molecules under intense laser fields. In particular, we review the backpropagation method, which is a novel hybrid quantum-classical approach towards full characterization of tunneling ionization dynamics. Continued advances in the interrogation techniques promise to pave the pathway towards the exploration of ever faster dynamical processes on an ever shorter timescale.

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High-harmonic generation driven by quantum light

Cited by 45 publications

References 50 publications

Imagining density distribution of molecular orbitals in IR+XUV co-rotating circular laser fields by frequency-domain theory

Imagining density distribution of molecular orbitals in IR+XUV co-rotating circular laser fields by frequency-domain theory

Robust Isolated Attosecond Pulse Generation with Self-Compressed Subcycle Drivers from Hollow Capillary Fibers

Attosecond ionization time delays in strong-field physics

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