2026
article
OpenAlex
C.C. Lam, Felix Allum, Benjamin Erk, H. Bromberger et autres
Using intense femtosecond soft x-ray pulses above the sulfur 2p edge produced by the Free-electron LASer in Hamburg (FLASH), we investigate the multiple ionization and fragmentation dynamics of CS2. We focus on the three-ion fragmentation pathways of CS2 polycations with total charges …
gb, de, us, ca
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Accès ouvert
2026
article
OpenAlex
Alexander N. Harper, Jonathan Boisvert, Albert Stolow, Adrian F. Pegoraro et autres
Lithium is a critical component in rechargeable battery chemistries, leading to international interest in efficient ore characterization methods. Current industry-standard automated mineralogy systems (EDX) provide high-resolution mapping but are challenged by long analysis times and intensive sample preparation. Here we demonstrate the …
ca
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Accès ouvert
2026
preprint
OpenAlex
Ahmed Jaber, Michael Küblböck, Jean‐Michel Ménard, Hanieh Fattahi et autres
We develop a microscopic open-quantum-system theory for a radiation-balanced solar laser (RBSL) based on ytterbium-doped yttrium aluminum garnet (Yb:YAG), in which optical gain, thermal redistribution among sublevels of the electronic ground and excited manifolds, and lattice-temperature dynamics are treated within a unified …
ca
(code pays fourni par la source)
2026
article
OpenAlex
Yaswant Vaddi, Theng-Loo Lim, Yiyu Zhou, Mohammad Karimi et autres
Parametric amplification of optical waves conventionally requires phase matching and frequency offsets between interacting beams. Here, we demonstrate a fundamentally different amplification mechanism in epsilon-near-zero (ENZ) materials, where intense optical pumping creates a time-varying medium. We show, both theoretically and experimentally, that …
ca, es, ru, us
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Accès ouvert
2026
preprint
OpenAlex
Kyle M. Jordan, Yingwen Zhang, Frédéric Bouchard, Duncan England et autres
Quantum spectroscopy seeks to probe chemical systems using nonclassical light, which has properties that are qualitatively and quantitatively different than conventional light sources. One promising technique uses intensity-correlated twin beams of light to reduce the noise sources inherent to absorption spectroscopy. However, …
ca, us
(code pays fourni par la source)
Accès ouvert
2026
article
OpenAlex
Felix Allum, C.C. Lam, Benjamin Erk, H. Bromberger et autres
We present the results from a detailed study of the fragmentation dynamics of CS22+ and CS23+, formed in intense femtosecond soft x-ray pulses above the sulfur 2p edge, primarily through single core photoionization from the S 2p site, and subsequent Auger-Meitner decay(s). …
de, us, gb, ca
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Accès ouvert
2025
article
OpenAlex
V. Sharma, Dorian Brandmüller, Johannes Bütow, Jörg S. Eismann et autres
Efficient and precise information storage and processing using light’s various degrees of freedom - intensity, phase, and polarization - have vast applications in modern photonics. The corresponding utilization necessitates the accurate measurement and decomposition of arbitrary spatial modes into their orthogonal components. …
at, ca, de
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Accès ouvert
2025
article
OpenAlex
Pedram Abdolghader, Marco Scaglia, Étienne Doiron, Maksym Ivanov et autres
We present a robust approach capable of generating ultrashort pulses in the visible (VIS) spectral range through second-harmonic generation of broadened pulses centered at around 1030 nm. Tunable VIS pulses with durations as short as 10 fs, sub-20 fs, and sub-50 fs …
ca
(code pays fourni par la source)
2025
conference-paper
OpenAlex
Ahmed Jaber, Michael Küblböck, Jean‐Michel Ménard, Hanieh Fattahi et autres
We explore an innovative approach to a space-based laser system which uses solar irradiance to directly produce laser light as opposed to using conventional solar power generation to power an onboard laser. The efficiency of such a system can lead to cost …
ca, de
(code pays fourni par la source)
2025
conference-paper
OpenAlex
Ahmed Jaber, Michael Reitz, Avinash Singh, Ali Maleki et autres
Investigations of molecular polaritonic phenomena have gained prominence due to recent experiments highlighting the potential of strong light-matter coupling to modify the pathways and rates of chemical reactions. We design a hybrid metamaterial-photonic cavity architecture with a resonance located at THz frequencies …
ca
(code pays fourni par la source)
2025
conference-paper
OpenAlex
Adrian F. Pegoraro, Albert Stolow
Coherent Raman Microscopy (CRM), a nonlinear optical version of Raman microscopy, offers rapid, chemical-specific, label-free imaging. Unfortunately, competing background optical processes limit its sensitivity and contrast in many materials. Existing modulation transfer schemes developed to reduce these are based on well-known concepts …
ca
(code pays fourni par la source)
2025
conference-paper
OpenAlex
Angela Gamouras, Nicolas Couture, Wei Cui, Markus Lippl et autres
Real-time detection of terahertz (THz) radiation has the potential to unlock scientific discoveries in studies of fast and non-reproducible phenomena. Additionally, detection schemes able to resolve single THz photons are essential to enable a new range of quantum applications. Here, we demonstrate …
ca, de, it
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