Spatiotemporal rotational dynamics of laser-driven molecules

Lin, Kang; Tutunnikov, Ilia; Ma, Jing; Qiang, Junjie; Zhou, Lianrong; Faucher, O.; Prior, Yehiam; Averbukh, Ilya Sh.; Wu, Jian

doi:10.1117/1.ap.2.2.024002

Cited by 51 publications

(36 citation statements)

References 171 publications

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“…Light that possesses transverse angular momentum is a relatively recent phenomenon and an exciting new area of beam control research. Considering the applications which use traditional, spatially twisted or vortex light 3 – 8 , 10 – 21 , we should expect that space-frequency or space-time twisted beams (including STOVs) will be used in optical tweezing, particle manipulation, optical communications, and astronomy in novel ways 24 , 26 , 60 . In addition, there has been recent work in coupling spin (concerns circular polarization) and orbital angular momenta resulting in novel light control, generation, and optical manipulation techniques 61 – 63 .…”

Section: Discussionmentioning

confidence: 99%

Twisted space-frequency and space-time partially coherent beams

Hyde

2020

Sci Rep

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We present partially coherent sources that are statistically twisted in the space-frequency and space-time domains. Beginning with the superposition rule for genuine partially coherent sources, we derive source plane expressions for the cross-spectral density (CSD) and mutual coherence functions (MCFs) for twisted space-frequency and space-time Gaussian Schell-model (GSM) beams. Using the Fresnel approximation to the free-space Green’s function, we then paraxially propagate the CSD and MCF to any plane . We discuss the beams’ behavior as they propagate, with particular emphasis on how the beam shape rotates or tumbles versus z . To validate our analysis, we simulate the generation and subsequent propagation of twisted space-frequency and space-time GSM beams. We compare the simulated moments to the corresponding theoretical predictions and find them to be in excellent agreement. Lastly, we describe how to physically synthesize twisted space-frequency and space-time partially coherent sources.

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Section: Discussionmentioning

confidence: 99%

Twisted space-frequency and space-time partially coherent beams

Hyde

2020

Sci Rep

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“…In summary, combining outstanding spatial and temporal resolutions with an ultrahigh frame rate, FINCOPA is a powerful single-shot ultrafast optical imaging technique for accurate temporal and spatial observations of single transient events occurring in the femtosecond region, such as atomic or molecular dynamics in photonic materials, 39 plasma physics, and ultrafast laser ablation for precise machining and manufacturing.…”

Section: Discussionmentioning

confidence: 99%

High-spatial-resolution ultrafast framing imaging at 15 trillion frames per second by optical parametric amplification

et al. 2020

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We report a framing imaging based on noncollinear optical parametric amplification (NCOPA), named FINCOPA, which applies NCOPA for the first time to single-shot ultrafast optical imaging. In an experiment targeting a laser-induced air plasma grating, FINCOPA achieved 50 fs-resolved optical imaging with a spatial resolution of ∼83 lp∕mm and an effective frame rate of 10 trillion frames per second (Tfps). It has also successfully visualized an ultrafast rotating optical field with an effective frame rate of 15 Tfps. FINCOPA has simultaneously a femtosecond-level temporal resolution and frame interval and a micrometer-level spatial resolution. Combining outstanding spatial and temporal resolutions with an ultrahigh frame rate, FINCOPA will contribute to high-spatiotemporal resolution observations of ultrafast transient events, such as atomic or molecular dynamics in photonic materials, plasma physics, and laser inertial-confinement fusion.

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“…In contrast, OLP pulse sequences, as shown in Figure 4B, additionally address the spatiotemporal aspect of the light-matter interaction due to their time-dependent polarization. Their application ranges from the phase-control of currents in semiconductors [152] to the steering of molecular rotation [153,154]. Crossed polarizations demand a vectorial description of the field and thus provide access to the angular properties of the interaction energy −μ • E. Depending on the relative phase, OLP pulses are either linearly, elliptically or circularly polarized at τ 0.…”

Section: Single-color Linearly Polarized Pulse Sequencesmentioning

confidence: 99%

Multichromatic Polarization-Controlled Pulse Sequences for Coherent Control of Multiphoton Ionization

et al. 2021

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In this review, we report on recent progress in the generation and application of multichromatic polarization-tailored pulse sequences for the coherent control of multiphoton ionization (MPI) dynamics and present unpublished experimental results that complement our previous findings. Specifically, we utilize single-color, bichromatic, and trichromatic polarization-controlled pulse sequences generated by spectral amplitude, phase and polarization modulation of a carrier-envelope phase (CEP)-stable white light supercontinuum for MPI. The analysis of the number of ionization pathways and the number of distinct final free electron states shows that both increase significantly, but scale differently with the number of absorbed photons and the number of pulses in the sequence. In our experiments, ultrafast polarization shaping is combined with high-resolution photoelectron tomography to generate, control, and reconstruct three-dimensional photoelectron momentum distributions from atomic and molecular MPI. We discuss the use of polarization-controlled single-color and bichromatic pulse sequences in perturbative and non-perturbative coherent control of coupled electron-nuclear dynamics in molecules, atomic spin-orbit wave packet dynamics and the directional photoemission from atoms and chiral molecules. We compare the coherent control of CEP-insensitive intraband multipath interference in the MPI with a fixed number of photons with CEP-sensitive interband multipath interference in the ionization with a different number of photons. The generation and control of free electron vortices with even-numbered rotational symmetry by MPI with single-color pulse sequences is contrasted with the bichromatic control of CEP-sensitive electron vortices with odd-numbered rotational symmetry. To illustrate the potential of multichromatic pulse sequences for coherent control, we present a trichromatic scheme for shaper-based quantum state holography.

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Spatiotemporal rotational dynamics of laser-driven molecules

Cited by 51 publications

References 171 publications

Twisted space-frequency and space-time partially coherent beams

Twisted space-frequency and space-time partially coherent beams

High-spatial-resolution ultrafast framing imaging at 15 trillion frames per second by optical parametric amplification

Multichromatic Polarization-Controlled Pulse Sequences for Coherent Control of Multiphoton Ionization

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