Zobrazeno 1 - 10
of 263
pro vyhledávání: '"TRAVERS, JOHN"'
Autor:
Plosz, Balazs, Lekosiotis, Athanasios, Sabbah, Mohammad, Belli, Federico, Brahms, Christian, Travers, John C.
We report the generation of a multi-octave supercontinuum spanning from 350 nm to 1700 nm with exceptional spectral flatness and high conversion efficiency to both the visible and near infrared region, by pumping a methane-filled hollow-core antireso
Externí odkaz:
http://arxiv.org/abs/2411.16390
Autor:
Brahms, Christian, Travers, John C.
Ultrafast laser sources in the far ultraviolet (100 nm to 300 nm) have been the subject of intense experimental efforts for several decades, driven primarily by the requirements of advanced experiments in ultrafast science. Resonant dispersive wave e
Externí odkaz:
http://arxiv.org/abs/2402.18981
Autor:
Brahms, Christian, Zhang, Lin, Shen, Xiao, Bhattacharya, Utso, Recasens, Maria, Osmond, Johann, Grass, Tobias, Chhajlany, Ravindra W., Hallman, Kent A., Haglund, Richard F., Pantelides, Sokrates T., Lewenstein, Maciej, Travers, John C., Johnson, Allan S.
The nature of the insulator-to-metal phase transition in vanadium dioxide (VO2) is one of the longest-standing problems in condensed-matter physics. Ultrafast spectroscopy has long promised to determine whether the transition is primarily driven by t
Externí odkaz:
http://arxiv.org/abs/2402.01266
Autor:
Galán, Marina Fernández, Serrano, Javier, Jarque, Enrique Conejero, Borrego-Varillas, Rocío, Lucchini, Matteo, Reduzzi, Maurizio, Nisoli, Mauro, Brahms, Christian, Travers, John C., Hernández-García, Carlos, Roman, Julio San
High-order harmonic generation (HHG) arising from the non-perturbative interaction of intense light fields with matter constitutes a well-established tabletop source of coherent extreme-ultraviolet and soft X-ray radiation, which is typically emitted
Externí odkaz:
http://arxiv.org/abs/2312.13321
Autor:
Lekosiotis, Athanasios, Belli, Federico, Brahms, Christian, Sabbah, Mohammed, Sakr, Hesham, Davidson, Ian A., Poletti, Francesco, Travers, John C.
We report the flexible on-target delivery of 800 nm wavelength, 5 GW peak power, 40 fs duration laser pulses through an evacuated and tightly coiled 10 m long hollow-core nested anti-resonant fiber by positively chirping the input pulses to compensat
Externí odkaz:
http://arxiv.org/abs/2305.16911
We experimentally and numerically investigate flat supercontinuum generation in gas-filled anti-resonant guiding hollow-core photonic crystal fiber. By comparing results obtained with either argon or nitrogen we determine the role of the rotational R
Externí odkaz:
http://arxiv.org/abs/2305.07496
We experimentally investigate the nonlinear dynamics of ultrashort laser pulses propagating in gas-filled hollow capillary fibres in different dispersion regimes, which are achieved by tuning the gas pressure. When the pulse propagates in the anomalo
Externí odkaz:
http://arxiv.org/abs/2302.01113
Autor:
Sabbah, Mohammed, Belli, Federico, Brahms, Christian, Yu, Fei, Knight, Jonathan, Travers, John C.
We investigate soliton self-compression and photoionization effects in an argon-filled antiresonant hollow-core photonic crystal fiber pumped with a commercial Yb:KGW laser. Before the onset of photoionization, we demonstrate self-compression of our
Externí odkaz:
http://arxiv.org/abs/2212.11908
Autor:
Brahms, Christian, Travers, John C.
Publikováno v:
Opt. Lett. 48, 151-154 (2023)
Deep ultraviolet (DUV) laser pulses with tuneable wavelength and very short duration are a key enabling technology for next-generation technology and ultrafast science. Their generation has been the subject of extensive experimental effort, but no te
Externí odkaz:
http://arxiv.org/abs/2206.07103
Autor:
Brahms, Christian, Travers, John C.
We investigate soliton self-compression and ultraviolet resonant dispersive wave emission in the higher-order modes of a gas-filled hollow capillary fibre. Our simple analytical scaling rules predict shorter required waveguides and different energy s
Externí odkaz:
http://arxiv.org/abs/2112.00369