Peer-reviewed and non-peer-reviewed papers
Press releases, flyers and other publications
Interaction of Laguerre–Gaussian laser pulses with borane targets of different hydrogen–boron ratio
Lars Reichwein, Alexander Pukhov & Markus Büscher
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The key findings are: 1) LG laser pulses can generate strong axial magnetic fields due to the Inverse Faraday effect, making them of interest for nuclear fusion, like in V4F. 2) Boranes allow some „tuning“ of the exact ratio of hydrogen to boron for different molecules, effectively changing the interaction of the laser pulse with the plasma.
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Read open access here.​
Coherent beam combining of optical vortices
Double-clad ytterbium-doped tapered fiber with circular birefringence as a gain medium for structured light
Iuliia Zalesskaia, Yuhao Lei, Peter G. Kazansky, Katrin Wondraczek, Regina Gumenyuk, and Valery Filippov
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Read open access here.​
High Yield of Alpha Particles Generated in Proton-Boron Nuclear Fusion Reactions Induced in Solid Boron Hydride B18H22
The V4F team has written a paper on the results of our first experimental campaign at the Prague Asterix Laser System (PALS) in 2023. While not yet peer-reviewed, the paper can already be accessed on arXiv here.
Optical Vortex Dynamics in Non-Uniform Twisted Ring-Core Fibers
Hassan Asgharzadeh B., Regina Gumenyuk, Marco Ornigotti.
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This theoretical study investigates how, by controlling the twisting and tapering parameters, it is possible to achieve efficient power transfer between different OAM modes in V4F's ring-core fibers. While not yet peer-reviewed, the paper can already be accessed on arXiv here.
Power-Scalable Generation of High-Order Optical
Vortices Via Coherent Beam Combining
Hossein Fathi, Rafael F. Barros, and Regina Gumenyuk
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This work demonstrates coherent beam combining as a versatile and scalable tool for the generation of high-power, high-purity optical vortex beams without imposing limitations on topological charge or spatial structure, while maintaining exceptionally high modal purity. While not yet peer-reviewed, the paper can already be accessed on arXiv here.
High-purity amplification of circularly polarized orbital angular momentum modes in an active spun ring-core tapered fiber
Iuliia Zalesskaia, Hassan Asgharzadeh B., Zahra Eslami, Hossein Fathi, Evgenii Gribanov, Andrey Grishchenko, Florian Lindner, Katrin Wondraczek, Evgeny Savelyev, Marco Ornigotti, Valery Filippov, and Regina Gumenyuk​​
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This work demonstrates an active spun ring-shaped tapered fiber as a gain medium for efficient amplification of OAM modes preserving their modal purity and polarization topology. While not yet peer-reviewed, the paper can already be accessed on arXiv here.
Innovation Radar Assessments after RP2
In our second periodic review, our consortium revisited and updated the innovations we see arising from our project. In addition to the three ones we identified in RP1, we added a fourth one to the list. All of 4 innovations have been assessed by the EC and published on their website.
1. "Active Helical Tapered double-clad Fiber with ring-shaped core for the generation of high-OAM light beams" can be found here.
2. "OAM-generated axial magnetic field scheme for inertial confinement fusion" can be found here.
3. "Novel borane targets for efficient proton-boron fusion" can be found here.
4. "Production process for highly reproducible synthesis of precursor materials" can be found here.
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The interaction of vortex light with boron hydrides
Accompanying our latest peer reviewed publication on Laguerre-Gaussian laser pulses and their interaction with borane targets, a "Behind the Paper" article was released. You can read it by clicking here.
V4F in Laser Focus World
We are very excited that V4F is attracting interest from major photonics magazines! Laser Focus World has included our work on boranes in their latest article on the quest to find laser fusion fuels, alongside the work of other leading research institutes. The full article can be read here.
Innovation Radar Assessments
As part of the first periodic review, the innovations of our project have been assessed by the EC and published on their website.
1. "Active Helical Tapered double-clad Fiber with ring-shaped core for the generation of high-OAM light beams" can be found here.
2. "OAM-generated axial magnetic field scheme for inertial confinement fusion" can be found here.
3. "Novel borane targets for efficient proton-boron fusion" can be found here.
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