Simultaneous nonlinear spectral broadening and temporal contrast enhancement of ultrashort pulses in a multi-pass cell

Autor: Jaismeen Kaur, Louis Daniault, Zhao Cheng, Oscar Tourneur, Olivier Tcherbakoff, Fabrice Réau, Jean-François Hergott, Rodrigo Lopez-Martens

Publikováno v: JPhys Photonics, Vol 6, Iss 1, p 015001 (2023)

We study both numerically and experimentally the use of two third-order nonlinear temporal filtering techniques, namely nonlinear ellipse rotation and cross-polarized wave generation, for simultaneous nonlinear spectral broadening and temporal contra

Externí odkaz: https://doaj.org/article/264573ec14f042ca8d867a39bb016c50

Spin, time, and angle resolved photoemission spectroscopy on WTe_{2}

Autor: Mauro Fanciulli, Jakub Schusser, Min-I Lee, Zakariae El Youbi, Olivier Heckmann, Maria Christine Richter, Cephise Cacho, Carlo Spezzani, David Bresteau, Jean-François Hergott, Pascal D'Oliveira, Olivier Tcherbakoff, Thierry Ruchon, Jan Minár, Karol Hricovini

Publikováno v: Physical Review Research, Vol 2, Iss 1, p 013261 (2020)

We combined a spin resolved photoemission spectrometer with a high-harmonic generation (HHG) laser source in order to perform spin, time, and angle resolved photoemission spectroscopy (STARPES) experiments on the transition metal dichalcogenide bulk

Externí odkaz: https://doaj.org/article/977925e16ee3444aafa71f0496484dfd

Nonlinear up-conversion of a polarization Möbius strip with half-integer optical angular momentum

Autor: Martin Luttmann, Mekha Vimal, Matthieu Guer, Jean-François Hergott, Antonio Z. Khoury, Carlos Hernández-García, Emilio Pisanty, Thierry Ruchon

Publikováno v: Science Advances
Science Advances, 2023, 9 (12), ⟨10.1126/sciadv.adf3486⟩
Luttmann, M, Vimal, M, Guer, M, Hergott, J-F, Khoury, A Z, Hernández-García, C, Pisanty, E & Ruchon, T 2023, ' Nonlinear up-conversion of a polarization Möbius strip with half-integer optical angular momentum ', Science Advances, vol. 9, no. 12, eadf3486, pp. eadf3486 . https://doi.org/10.1126/sciadv.adf3486

Symmetries and conservation laws of energy, linear momentum, and angular momentum play a central role in nonlinear optics. Recently, paraxial light fields with nontrivial topology have been attracting a keen interest. Despite not being eigenstates of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4a441eef25eb9496306f059ccc62ae1
https://cea.hal.science/cea-04048980

Cross-polarized wave generation in multi-pass cells

Autor: Jaismeen Kaur, Louis Daniault, Zhao Cheng, Jean-François Hergott, Fabrice Reau, Olivier Tcherbakoff, Rodrigo Lopez-Martens

Publikováno v: Optica High-brightness Sources and Light-driven Interactions Congress 2022.

We report on cross-polarised wave generation in multi-pass cells at the milli-Joule level. Backed by simulations, results indicate 103 contrast enhancement, high spatio-temporal beam quality, and a record internal conversion efficiency of 50%.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a3e7d465dab4c512ddbcfaadf00fdb86
https://doi.org/10.1364/euvxray.2022.jth6a.2

Single-stage few-cycle nonlinear compression of milliJoule energy Ti:Sa femtosecond pulses in a multipass cell

Autor: Louis Daniault, O. Tcherbakoff, Zhao Cheng, Jaismeen Kaur, Jean-François Hergott, Nour Daher, Rodrigo Lopez-Martens, Marc Hanna, F. Réau, Xavier Délen

Publikováno v: Optics Letters
Optics Letters, Optical Society of America-OSA Publishing, 2021, 46 (20), pp.5264. ⟨10.1364/ol.442707⟩
Optics Letters, 2021, 46 (20), pp.5264. ⟨10.1364/ol.442707⟩

International audience; We report on the nonlinear temporal compression of mJ energy pulses from a Ti:Sa chirped pulse amplifier system ina multipass cell filled with argon. The pulses are compressed from 30 fs down to 5.3 fs, corresponding to two op

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::580330cdf21529f1d03d5f237a923a37