Extreme ultraviolet vector-vortex beams from laser high order harmonic generation

Olivier Guilbaud; Alok-Kumar Pandey; Alba De Las Heras Munoz; Julio San Román; Francisco Javier Serrano Rodriguez; Elsa Baynard; Moana Pittman; Guillaume Dovillaire; Luis Plaja; Charles Durfee; Sophie Kazamias; Carlos Hernández García

doi:10.1117/12.2666752

8 June 2023 Extreme ultraviolet vector-vortex beams from laser high order harmonic generation

Olivier Guilbaud, Alok-Kumar Pandey, Alba De Las Heras Munoz, Julio San Román, Francisco Javier Serrano Rodriguez, Elsa Baynard, Moana Pittman, Guillaume Dovillaire, Luis Plaja, Charles Durfee, Sophie Kazamias, Carlos Hernández García

Author Affiliations +

Proceedings Volume PC12582, Compact Radiation Sources from EUV to Gamma-rays: Development and Applications; PC1258209 (2023) https://doi.org/10.1117/12.2666752
Event: SPIE Optics + Optoelectronics, 2023, Prague, Czech Republic

Abstract

High-order harmonic generation (HHG) is an instrumental process enabling the transfer of short infrared pulse coherence properties into the Extreme Ultraviolet (EUV) spectral range. This phenomenon has opened the way to ultrafast pump-probe experiments at the nanoscale level. Recently, HHG has provided a straightforward approach to frequency upconvert beams structured in their phase and/or polarization. An emblematic example is the optical vortex beam, which is characterized by an azimuthally twisting wavefront. From a fundamental point of view, such a beam exhibits a phase singularity on the propagation axis and is carrying orbital angular momentum (OAM). Vector beams denote another structured beam family, exhibiting a spatially varying polarization. In this paper, we will present our recent results on the generation and characterization of EUV vortex beams exhibiting very high topological charges (up to 100). Besides, using a similar HHG up-conversion scheme, we will show the production of so-called EUV vector-vortex beams that present the combined characteristics of the vortex and vector beams. Finally, progress on plasma-based soft x-ray laser amplification of such structured beams will be outlined,

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Olivier Guilbaud, Alok-Kumar Pandey, Alba De Las Heras Munoz, Julio San Román, Francisco Javier Serrano Rodriguez, Elsa Baynard, Moana Pittman, Guillaume Dovillaire, Luis Plaja, Charles Durfee, Sophie Kazamias, and Carlos Hernández García "Extreme ultraviolet vector-vortex beams from laser high order harmonic generation", Proc. SPIE PC12582, Compact Radiation Sources from EUV to Gamma-rays: Development and Applications, PC1258209 (8 June 2023); https://doi.org/10.1117/12.2666752

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KEYWORDS

Extreme ultraviolet

Harmonic generation

Polarization

Spiral phase plates

Infrared radiation

Short wave infrared radiation

Wavefronts

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