Isolated attosecond pulse generation in a semi-infinite gas cell driven by time-gated phase matching

Autor: Federico Vismarra, Marina Fernández-Galán, Daniele Mocci, Lorenzo Colaizzi, Víctor Wilfried Segundo, Roberto Boyero-García, Javier Serrano, Enrique Conejero-Jarque, Marta Pini, Lorenzo Mai, Yingxuan Wu, Hans Jakob Wörner, Elisa Appi, Cord L. Arnold, Maurizio Reduzzi, Matteo Lucchini, Julio San Román, Mauro Nisoli, Carlos Hernández-García, Rocío Borrego-Varillas

Publikováno v: Light: Science & Applications, Vol 13, Iss 1, Pp 1-9 (2024)

Abstract Isolated attosecond pulse (IAP) generation usually involves the use of short-medium gas cells operated at high pressures. In contrast, long-medium schemes at low pressures are commonly perceived as inherently unsuitable for IAP generation du

Externí odkaz: https://doaj.org/article/c34743a7756843adb00ef92752129ffc

Single- to Sub-cycle Pulse Generation by Self-compression in Hollow Capillary Fibers with Decreasing Pressure Gradients

Autor: Marina Fernández Galán, Enrique Conejero Jarque, Julio San Roman

Publikováno v: The International Conference on Ultrafast Phenomena (UP) 2022.

We theoretically demonstrate the optimization of near-infrared sub-cycle pulse self-compression in gas-filled hollow capillary fibers using decreasing pressure gradients, identifying the optimal input parameters and the main advantages of this techni

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3f535708597c62841fb7a99b4558b1ef
https://doi.org/10.1364/up.2022.tu4a.42

Influence of the spatial confinement on the self-focusing of ultrashort pulses in hollow-core fibers

Autor: Enrique Conejero Jarque, Aurora Crego, Julio San Roman

Publikováno v: Scientific Reports, Vol 9, Iss 1, Pp 1-12 (2019)
Scientific Reports
GREDOS. Repositorio Institucional de la Universidad de Salamanca
instname

The collapse of a laser beam propagating inside a hollow-core fiber is investigated by numerically solving different nonlinear propagation models. We have identified that the fiber confinement favors the spatial collapse, especially in case of pulses

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ceb806aa391ce2e909f652640038f922
http://link.springer.com/article/10.1038/s41598-019-45940-3

Ultrashort visible energetic pulses generated by nonlinear propagation of necklace beams in capillaries

Autor: Aurora Crego, Enrique Conejero Jarque, Julio San Roman

Publikováno v: GREDOS. Repositorio Institucional de la Universidad de Salamanca
instname
GREDOS: Repositorio Institucional de la Universidad de Salamanca
Universidad de Salamanca (USAL)

The generation of ultrashort visible energetic pulses is investigated numerically by the nonlinear propagation of infrared necklace beams in capillaries. We have developed a (3+1)D model that solves the nonlinear propagation equation, including the c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d307b8e04e72ed1af8d464904b1ed226
http://hdl.handle.net/10366/146003

Supercontinuum generation in the enhanced frequency chirp regime in multipass cells

Autor: Víctor W. Segundo Staels, Enrique Conejero Jarque, Daniel Carlson, Michaël Hemmer, Henry C. Kapteyn, Margaret M. Murnane, Julio San Roman

Publikováno v: EPJ Web of Conferences. 266:08014

We identify, via numerical simulations, the regime of enhanced frequency chirp during nonlinear propagation in multipass cell. This regime - used before the dawn of chirped pulse amplification to generate ultrashort pulses - paves the way for the gen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ac9134b180d975ecacd31b0ccb8a22e8
https://doi.org/10.1051/epjconf/202226608014