| Issue |
EPJ Web Conf.
Volume 309, 2024
EOS Annual Meeting (EOSAM 2024)
|
|
|---|---|---|
| Article Number | 07001 | |
| Number of page(s) | 2 | |
| Section | Topical Meeting (TOM) 7- Ultrafast Phenomena | |
| DOI | https://doi.org/10.1051/epjconf/202430907001 | |
| Published online | 31 October 2024 | |
https://doi.org/10.1051/epjconf/202430907001
Thermo-optical liquid-crystal phase modulator for ultrafast optics, driven by neural network
1 Université Cote d’Azur, CNRS, Institut de Physique de Nice, Nice, France
2 Fastlite, Antibes, France
* e-mail: aurelie.jullien@inphyni.cnrs.fr
Published online: 31 October 2024
We propose a new spatial light modulator (SLM) concept, relying on a local thermal modification of a thick liquid crystal layer, that is optically-induced through the absorption of a control beam. This innovative thermo-optically addressed SLM, coined TOA-SLM, has shown dynamic phase control capabilities over multi-octave light spectrum, as a promising candidate for spatial or temporal manipulation of ultrafast pulses. In addition to being ultra-broadband and programmable, such a device is low-cost, large-aperture and un-segmented with a high number of control points. The construction and training of a neural network-based statistical model provides configurable design of a prototype TOA-SLM. This step, together with the ultra-broadband acceptance of the device and its ability to introduce continuous and deep phase modulation over a large aperture, opens the way for ultrafast laser aberration compensation using this new technology.
© The Authors, published by EDP Sciences, 2024
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