Search

Your search keyword '"Hernández-García, Carlos"' showing total 25 results
Start Over Author "Hernández-García, Carlos" Publisher optica publishing group
25 results on '"Hernández-García, Carlos"'

2. Double Electron Recombination in Strongly Correlated System: Extended Secondary Plateau in UV-Driven High Harmonic Generation in the Soft X-ray Regime

Author

Wang, Siyang, primary, Yan, Jieyu, additional, de las Heras, Alba, additional, Song, Sirius, additional, Prodanov, Aleksandar, additional, Wu, Zhihan, additional, Hernández-García, Carlos, additional, Plaja, Luis, additional, Popmintchev, Dimitar, additional, and Popmintchev, Tenio, additional

Published
2023
Full Text
View/download PDF

6. Extreme-ultraviolet vector-vortex beams from high harmonic generation

Author

de las Heras, Alba, primary, Pandey, Alok Kumar, additional, San Román, Julio, additional, Serrano, Javier, additional, Baynard, Elsa, additional, Dovillaire, Guillaume, additional, Pittman, Moana, additional, Durfee, Charles G., additional, Plaja, Luis, additional, Kazamias, Sophie, additional, Guilbaud, Olivier, additional, and Hernández-García, Carlos, additional

Published
2022
Full Text
View/download PDF

10. High topological charge extreme-ultraviolet vortex and vector-vortex beams

Author

Pandey, Alok Kumar, primary, de las Heras, Alba, additional, Román, Julio San, additional, Serrano, Javier, additional, Baynard, Elsa, additional, Dovillaire, Guillaume, additional, Pittman, Moana, additional, Durfee, Charles G., additional, Plaja, Luis, additional, Kazamias, Sophie, additional, Hernández-García, Carlos, additional, and Guilbaud, Olivier, additional

Published
2022
Full Text
View/download PDF

15. Structuring Harmonic Vector-Vortex Beams in the Extreme Ultraviolet

Author

de las Heras, Alba, primary, Pandey, Alok Kumar, additional, Román, Julio San, additional, Serrano, Javier, additional, Baynard, Elsa, additional, Dovillaire, Guillaume, additional, Pittman, Moana, additional, Durfee, Charles G., additional, Plaja, Luis, additional, Kazamias, Sophie, additional, Guilbaud, Olivier, additional, and Hernández-García, Carlos, additional

Published
2021
Full Text
View/download PDF

24. Optical anisotropy of non-perturbative high-order harmonic generation in gapless graphene.

Author

Zurrón-Cifuentes Ó, Boyero-García R, Hernández-García C, Picón A, and Plaja L

Abstract

High harmonic generation in atomic or molecular targets stands as a robust mechanism to produce coherent ultrashort pulses with controllable polarization in the extreme-ultraviolet. However, the production of elliptically or circularly-polarized harmonics is not straightforward, demanding complex combinations of elliptically or circularly-polarized drivers, or the use of molecular alignment techniques. Nevertheless, recent studies show the feasibility of high-harmonic generation in solids. In contrast with atoms and molecules, solids are high-density targets and therefore more efficient radiation sources. Among solid targets, 2D materials are of special interest due to their particular electronic structure, which conveys special optical properties. In this paper, we present theoretical calculations that demonstrate an extraordinary complex light-spin conversion in single-layer graphene irradiated at non perturbative intensities. Linearly-polarized drivings result in the emission of elliptically-polarized harmonics, and elliptically-polarized drivings may result in linearly-polarized or ellipticity-reversed harmonics. In addition, we demonstrate the ultrafast temporal modulation of the harmonic ellipticity.

Published
2019
Full Text
View/download PDF

25. Phase matching of noncollinear sum and difference frequency high harmonic generation above and below the critical ionization level.

Author

Ellis JL, Dorney KM, Durfee CG, Hernández-García C, Dollar F, Mancuso CA, Fan T, Zusin D, Gentry C, Grychtol P, Kapteyn HC, Murnane MM, and Hickstein DD

Abstract

We investigate the macroscopic physics of noncollinear high harmonic generation (HHG) at high pressures. We make the first experimental demonstration of phase matching of noncollinear high-order-difference-frequency generation at ionization fractions above the critical ionization level, which normally sets an upper limit on the achievable cutoff photon energies. Additionally, we show that noncollinear high-order-sum-frequency generation requires much higher pressures for phase matching than single-beam HHG does, which mitigates the short interaction region in this geometry. We also dramatically increase the experimentally realized cutoff energy of noncollinear circularly polarized HHG, reaching photon energies of 90 eV. Finally, we achieve complete angular separation of high harmonic orders without the use of a spectrometer.

Published
2017
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results