Effects of Colliding Laser Pulses Polarization on e-e+ Cascade Development in Extreme Focusing

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F24%3A00377335" target="_blank" >RIV/68407700:21340/24:00377335 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevLett.133.125001" target="_blank" >https://doi.org/10.1103/PhysRevLett.133.125001</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevLett.133.125001" target="_blank" >10.1103/PhysRevLett.133.125001</a>

Result language
angličtina
Original language name
Effects of Colliding Laser Pulses Polarization on e-e+ Cascade Development in Extreme Focusing
Original language description
The onset and development of electron-positron cascade in a standing wave formed by multiple colliding laser pulses requires tight focusing in order to achieve the maximum laser intensity. There, steep spatiotemporal gradients in the laser intensity expel seed particles from the high-intensity region and thus can prevent the onset of a cascade. We show that radially polarized laser pulses ensure that the seed electrons are present at the focal plane at the moment of the highest amplitude even in the case of extreme focusing. This feature reduces the required laser power for the onset of a cascade 100 times (80 times) compared to circularly (linearly) polarized laser pulses having the same focal spot radius and duration.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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