Nonperturbative Generation of Harmonics by Nanometer-Scale Localized Electronic States on the Surface of Bulk Materials and Nano-Films

Autor: Jozsef Seres, Enikoe Seres, Eva Céspedes, Leyre Martinez-de-Olcoz, Miguel Zabala, Thorsten Schumm

Publikováno v: Optics, Vol 4, Iss 1, Pp 246-257 (2023)

The generation of high-order harmonics in solid crystals has received considerable attention recently. Using a driver laser with 0.8 µm wavelength and 28 fs ultrashort pulses, we present experimental results, accompanied with theoretical considerati

Externí odkaz: https://doaj.org/article/924a031a6e8e413e8cc009d3bc3fda11

Quantum Path Interference and Multiple Electron Scattering in Soft X-Ray High-Order Harmonic Generation

Autor: Jozsef Seres, Enikoe Seres, Bjoern Landgraf, Bastian Aurand, Thomas Kuehl, Christian Spielmann

Publikováno v: Photonics, Vol 2, Iss 1, Pp 104-123 (2015)

High-order harmonic generation is an important mechanism to generate coherent radiation in the few–100-eV spectral range with ultrashort laser pulses. Moreover, a closer inspection of the measured spectra provides unique information about the under

Externí odkaz: https://doaj.org/article/d158bd89ff3847ccb56d79d80dde9bef

High harmonic generation in AlN due to out-of-surface electron orbitals

Autor: Jozsef Seres, E. Seres, Thorsten Schumm, Carles Serrat

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

© 2021 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the cont

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e028bc85da6ba375a59bc03949e15a04
http://hdl.handle.net/2117/356807

Attosecond parametric pulse amplification in high order harmonic generation far from the ionization threshold

Autor: Masaharu Nishikino, E. Seres, T-H. Dinh, Carles Serrat, Shinichi Namba, Jozsef Seres, N. Hasegawa

Publikováno v: OSA High-brightness Sources and Light-driven Interactions Congress 2020 (EUVXRAY, HILAS, MICS).

We present first principles calculations of parametric amplification of attosec-ond coherent pulses around 100 eV at the single-atom level in high order harmonic generation from excited states of He+ and compare them with experimental measurements. O

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6d8c28ea83ef5ac812b470e64ed23c8a
https://doi.org/10.1364/euvxray.2020.eth3a.2

Non-perturbative generation of DUV/VUV harmonics from crystal surfaces at 108 MHz repetition rate

Autor: Thorsten Schumm, Jozsef Seres, E. Seres, Carles Serrat

Publikováno v: Optics Express
Recercat. Dipósit de la Recerca de Catalunya
instname
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

We demonstrate non-perturbative 3rd (267 nm) and 5th (160 nm) harmonic generation in solids from a Ti:sapphire frequency comb (800 nm) at 108 MHz repetition rate. The experiments show that non-perturbative low harmonics are dominantly generated on th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c730c3d98ac94d93b84cc721a8a67423
https://hdl.handle.net/2117/122005