Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Christian Brahms"'
Autor:
Christian Brahms, John C. Travers
Publikováno v:
APL Photonics, Vol 9, Iss 5, Pp 050901-050901-16 (2024)
Ultrafast laser sources in the far ultraviolet (100–300 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 emiss
Externí odkaz:
https://doaj.org/article/5f8881e1cd1e466eabcaf95c9e47f531
Publikováno v:
Physical Review Research, Vol 2, Iss 4, p 043037 (2020)
Infrared femtosecond laser pulses are important tools both in strong-field physics, driving x-ray high-harmonic generation, and as the basis for widely tunable, if inefficient, ultrafast sources in the visible and ultraviolet. Although anomalous mate
Externí odkaz:
https://doaj.org/article/51e12394c528445cafbfc77bce252221
Publikováno v:
Chemical Science. 13:9586-9594
We exploit the phenomenon of resonant dispersive wave (RDW) emission in gas-filled hollow capillary fibres (HCFs) to realize time-resolved photoelectron imaging (TRPEI) measurements with an extremely short temporal resolution. By integrating the outp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::365c15edb1e582c7b55c9697d30efc10
https://doi.org/10.1039/d2sc02185d
https://doi.org/10.1039/d2sc02185d
Autor:
Christian Brahms, John C. Travers
Publikováno v:
Heriot-Watt University
In both numerical simulations and experiment we find that, surprisingly, linearly and circularly polarised pulses produce near-identical plasma effects during soliton dynamics in gas-filled hollow waveguides, despite a reduction in field strength.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c70ab9b226f51d5cba4aae548d55ad3
https://doi.org/10.1364/cleo_at.2022.jtu3b.5
https://doi.org/10.1364/cleo_at.2022.jtu3b.5
Autor:
Athanasios Lekosiotis, Federico Belli, Christian Brahms, Teodora Grigorova, Hesham Sakr, Ian A. Davidson, Francesco Poletti, John C. Travers
Publikováno v:
Optica Advanced Photonics Congress 2022.
We report recent advances in pulse compression, frequency upconversion to the ultraviolet, polarisation control, and flexible pulse delivery experiments in the ultrafast regime, using different types of hollow-core fibres.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8b1c9484c0bf2f525e734abc3d1a442
https://doi.org/10.1364/sof.2022.sotu4i.2
https://doi.org/10.1364/sof.2022.sotu4i.2
Autor:
Athanasios Lekosiotis, Federico Belli, Christian Brahms, Hesham Sakr, Ian A. Davidson, Francesco Poletti, John C. Travers
Publikováno v:
Optica High-brightness Sources and Light-driven Interactions Congress 2022.
We report the on-target delivery of 40 fs, 200 µJ laser pulses at 800 nm through a 10 m long hollow-core nested anti-resonant fibre, with a guided peak intensity of 3×1015 W/cm2.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::67fd32d5cd8b8a33c4218a1962db9c71
https://doi.org/10.1364/hilas.2022.hth5b.6
https://doi.org/10.1364/hilas.2022.hth5b.6
Publikováno v:
Heriot-Watt University
We report the generation and temporal characterization of wavelength-tunable sub-15 fs pulses from a commercial 220 fs Yb laser, in a single stage, through soliton-plasma interactions in an argon-filled hollow-core anti-resonant fiber.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b68c226a7ba78faa39f7e4e09b9dbb43
https://doi.org/10.1364/cleo_at.2022.ath4c.3
https://doi.org/10.1364/cleo_at.2022.ath4c.3
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5853620fff8db7c47d9cb78322f011c4
Autor:
Christian Brahms
Publikováno v:
Optics Express. 31:7187
Gas-filled hollow-core fibres are a flexible platform for the manipulation of ultrafast laser pulses through a variety of nonlinear optical effects. Efficient high-fidelity coupling of the initial pulses is very important for system performance. Here
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5bbe82636f3e71d6dc71a9276839049e
https://doi.org/10.1364/oe.482749
https://doi.org/10.1364/oe.482749
Autor:
John C. Travers, Christian Brahms
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d42ff50cc32d3d76c49e5b96f64ef0c8
http://arxiv.org/abs/2112.00369
http://arxiv.org/abs/2112.00369