Group of Lasers and Plasmas

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Group of Lasers and Plasmas

For GoLP members, alumni, collaborators, and friends.

25/05/2026

Congratulations to GoLP team members honored with teaching and academic awards by Instituto Superior Técnico — recognition of their dedication, commitment and excellence. 🏅 🎓️

📸 Pictured: G. Figueira, B. Barbosa, R. Almeida and J. Joaquim.
Also acknowledged, though not pictured, are A. Santos, D. Faustino, J. Vieira and J. Mariano.

Thank you for advancing education and research through outstanding teaching 👏

IPFN - Instituto de Plasmas e Fusão Nuclear

21/05/2026

Last week we welcomed Yutong He, a new postdoctoral researcher at GoLP, who presented his work on “Linear Breit-Wheeler Pair Creation and Positron Dynamics in Laser‑Irradiated Plasmas.” ⚡️

The LBW process (𝛾𝛾 → e⁻e⁺) is a cornerstone prediction of QED, proposed in 1934 but not yet directly observed with real photons in the lab. Yutong described promising simulation results: a single state‑of‑the‑art laser pulse could produce ~10⁷ LBW pairs, with in‑situ fields collimating positrons and an anticipated backward signal of ~10⁶ MeV⁻¹ sr⁻¹, bringing experimental detection within reach. 💡

followed by discussion&coffee&cookies ☕️ 🍪

Instituto Superior Técnico
IPFN - Instituto de Plasmas e Fusão Nuclear

20/05/2026

Highlights from weekly seminars ✨

J. Joaquim presented groundbreaking work on radiative cooling in neutron star magnetospheres 🧲 ⭐️ , showing how strong gravity and intense fields create plasma conditions ripe for coherent emission ⚡️ .Curved spacetime turns out to make these instabilities even stronger 💪 and longer‑lived—great news for synchrotron radiation models!

Discussion continued over coffee ☕️

Instituto Superior Técnico
IPFN - Instituto de Plasmas e Fusão Nuclear

07/05/2026

To mark World Health Day 🏥 , Instituto Superior Técnico launched a campaign 💡 highlighting innovative projects currently under development and their present or future impact on the health sector.

IPFN - Instituto de Plasmas e Fusão Nuclear took part in this initiative, with Marta Fajardo showcasing how the NanoXCAN project is advancing future imaging technologies with strong potential relevance for healthcare.

Instituto Superior Técnico

IPFN - Instituto de Plasmas e Fusão Nuclear

https://www.facebook.com/watch/?v=1830951634268370

30/04/2026

☄️ GoLP participated in Técnico Open Day at the IPFN stand, showcasing "The Journey of Lasers and Plasmas."

Visitors tried GoLP’s interactive VR 👀 🥽 demos of plasma-driven particle accelerators, astrophysical plasmas 🪐, and light–matter interactions ⚡️💥.

The display also included a 3D model of the VOXEL Lab, detailing parts of a next‑generation X‑ray imaging 🩻 🔬 system designed for finer spatial resolution with lower radiation dose—offering encouraging medical prospects (NanoXcan project).

We warmly thank all GoLP volunteers whose passion and energy made the day truly brilliant.

Read more: https://buff.ly/sQF6dvR

Instituto Superior Técnico
IPFN - Instituto de Plasmas e Fusão Nuclear

29/04/2026

At last week’s seminar, Gareth Williams presented "From 🩻 X-ray to optical lasers: what can these sources teach us about dense plasma physics" examining how dense plasmas in 🔋 HEDP labs and compact astrophysical objects 🕳️ ⭐️ are shaped by strong Coulomb coupling, 💥 collisions and 🐈‍⬛ 📦️ quantum degeneracy, and the experimental hurdles in isolating their behavior. He highlighted the VOXEL team’s GoLP work using short laser pulses, XFELs and combined optical/XUV probes to constrain ionization and recombination rates and refine models.

Instituto Superior Técnico
IPFN - Instituto de Plasmas e Fusão Nuclear

20/04/2026

☀️ 🗓️ Closing another week with our group seminar.

Last friday Xuezhi Wu presented his work "From generalized superradiance to coherent betatron emission: a quasiparticle perspective," offering a quasiparticle-based view on radiation mechanisms in accelerators and potential implications for compact light sources and beam diagnostics. Lively Q&A and fruitful discussions continued over coffee and networking.☕️

Instituto Superior Técnico
IPFN - Instituto de Plasmas e Fusão Nuclear

16/04/2026

🏆 Diogo Carvalho has been named the Outstanding Reviewer for 2025 by Machine Learning: Science and Technology (IOP Publishing), honoring his notable contributions to peer review.

The award celebrates his careful, expert assessments that uphold scholarly rigor, accuracy, and integrity, and the journal thanked him for his continued dedication to high editorial standards.

Congratulations to Diogo Carvalho on this well-deserved honor! 👏

://www.facebook.com/tecnico.ulisboa.pt

IPFN - Instituto de Plasmas e Fusão Nuclear
IOP Publishing

10/04/2026

Wrapping up the week with our regular seminar. 🗓️

Today David Gauthier from CEA Saclay (CEA IRAMIS) presented his work on high-order harmonic generation in semiconductor crystals 💎. When powerful, ultra-short laser pulses hit solids, they produce new light 💡 at multiple harmonics 🛜 —revealing both material characteristics and ultrafast ⏩ electron dynamics.

The talk covered the underlying physics and highlighted recent results from NanoLight LIDYL laser platform, spanning basic understanding to practical applications. Conversation carried on over coffee ☕️ 🫖 🍪.

David Gauthier is hosted at Instituto Superior Técnico via the Fundação para a Ciência e a Tecnologia (FCT) Mobility program.
CEA IRAMIS
Instituto Superior Técnico
IPFN - Instituto de Plasmas e Fusão Nuclear

06/04/2026

In our most recent weekly seminar, Diogo Carvalho presented "Studying the PIC collision operator using data-driven methods."

Particle-in-Cell simulations capture the self-consistent motion of finite-size charged particles and their electromagnetic fields 🧲 ; finite particle size modifies collisional dynamics and leads to a modified collision operator. He surveyed 🧐 the established theory, demonstrated recent data-driven verification ✅️ , and connected these results to ongoing efforts to learn collision operators from PIC simulations 💡.

https://www.facebook.com/tecnico.ulisboa.pt

https://www.facebook.com/IPFNLA/

Endereço

Avenida Rovisco Pais
Lisbon

Website

http://epp.tecnico.ulisboa.pt/

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