Generation of structured coherent extreme ultraviolet beams from an MgO crystal

Korobenko, Aleksey; Rashid, Sabaa; Heide, Christian; Naumov, A.; Reis, David A.; Berini, Pierre; Corkum, P. B.; Vampa, Giulio

doi:10.1364/oe.431974

Cited by 11 publications

(5 citation statements)

References 29 publications

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“…Hence, we clearly demonstrate control of electron motion for VUV energies around 20 eV. This is important because these energies are within the range of highharmonics generated from solids where one can harness the surface structure that can be added to solids to focus the VUV light down to the 100 nm scale [37].…”

Section: B Control Of Direction Of Electron Ionization With Vuv+ir Pu...mentioning

confidence: 73%

“…Using high harmonic generation, it will be possible in the future to generate a focused down to roughly 100 nm VUV light spring from an OAM IR laser field. Indeed, it was recently reported that roughly 12 eV VUV beams were generated by high harmonics from the MgO solid focused down to 100 nm [37]. The circular IR laser beam will be obtained from the fundamental IR laser field as well.…”

Section: Discussionmentioning

confidence: 99%

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Mapping the direction of electron ionization to phase delay between VUV and IR laser pulses

Mountney,

Katsoulis,

Møller

et al. 2022

Preprint

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Section: B Control Of Direction Of Electron Ionization With Vuv+ir Pu...mentioning

confidence: 73%

Section: Discussionmentioning

confidence: 99%

Mapping the direction of electron ionization to phase delay between VUV and IR laser pulses

Mountney,

Katsoulis,

Møller

et al. 2022

Preprint

View full text Add to dashboard Cite

“…Hence, we clearly demonstrate control of electron motion for VUV energies around 20 eV. This is important because these energies are within the range of high harmonics generated from solids where one can harness the surface structure that can be added to solids to focus the VUV light down to the 100 nm scale [37].…”

Section: B Control Of the Direction Of Electron Ionization With Vuv+i...mentioning

confidence: 74%

Section: Discussionmentioning

confidence: 99%

Mapping the direction of electron ionization to phase delay between VUV and IR laser pulses

et al. 2022

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We theoretically demonstrate a one-to-one mapping between the direction of electron ionization and the phase delay between a linearly polarized vacuum ultraviolet (VUV) and a circular infrared (IR) laser pulse. To achieve this, we use an ultrashort VUV pulse that defines the moment in time and space when an above-threshold electron is released in the IR pulse. The electron can then be accelerated to high velocities escaping in a direction completely determined by the phase delay between the two pulses. The dipole matrix element to transition from an initial bound state of the N 2 molecule, considered in this work, to the continuum is obtained using quantum-mechanical techniques that involve computing accurate continuum molecular states. Following release of the electron in the IR pulse, we evolve classical trajectories, neglecting the Coulomb potential and accounting for quantum interference, to compute the distribution of the direction and magnitude of the final electron momentum. The concept we theoretically develop can be implemented to produce nanoscale ring currents that generate large magnetic fields.

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“…An advantage of solid-state platforms is the ability to form nanostructured systems which provide control over the amplitude, phase, and polarization of the light produced through the nonlinear optical conversion process, ,− with great significance for the development of novel nanophotonic systems. Recently, there has been a significant effort to develop metasurfaces that can tailor the polarization of light in nonlinear optical processes, especially for chiral light applications, − since CPL is useful in a variety of applications in molecular biology, telecommunications, quantum encryption, and analytical chemistry. − Unfortunately, since such metasurfaces depend on resonant structures, their optical properties (including the wavelength of operation, NOC efficiency, and light polarization) cannot be tailored dynamically as they are tied to the metasurface geometry and material properties of the system.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Control of Nonlinearly Generated Light Chirality with Nanostructured Graphene

Matthaiakakis

Droulias

Kakarantzas

2023

ACS Appl. Opt. Mater.

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The constant development of nanotechnology has facilitated significant improvements in the field of nonlinear optics. Metasurfaces and metamaterials, or nanostructured material systems, have allowed excellent control over a variety of linear and nonlinear optical processes, including manipulation of the amplitude, phase, and polarization of light. To facilitate this progress, there is an increasing demand for small footprint nonlinear material systems and metamaterial designs that offer diverse functionalities. Here, we demonstrate that this demand can be satisfied by utilizing the family of two-dimensional materials and more specifically graphene. In this work, we take advantage of the exceptionally large nonlinearity of graphene and demonstrate simultaneous dynamic control over the polarization state and nonlinear conversion efficiency of the third harmonic emission via the coherent excitation of localized surface plasmons in nanopatterned graphene rectangular arrays. Using finite-difference time-domain simulations and through electrostatic control over the Fermi level in graphene, we demonstrate broadband dynamic tuning between linear and circular polarization states for the third harmonic emission. The proposed method is not limited to third harmonic emission and is applicable to different nonlinear optical processes. As a result, the proposed metasurface constitutes an outstanding platform for commercially viable, CMOS-compatible, room-temperature devices for nonlinear conversion applications.

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Generation of structured coherent extreme ultraviolet beams from an MgO crystal

Cited by 11 publications

References 29 publications

Mapping the direction of electron ionization to phase delay between VUV and IR laser pulses

Mapping the direction of electron ionization to phase delay between VUV and IR laser pulses

Mapping the direction of electron ionization to phase delay between VUV and IR laser pulses

Dynamic Control of Nonlinearly Generated Light Chirality with Nanostructured Graphene

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