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physics.optics2026
Four-wave mixing and secondary radiations generated by nonharmonic two-color filaments in air: Influence of the Kerr and plasma nonlinearities
V. Tamulienė, P. David, V. Vaičaitis +4
Four-wave mixing (FWM) is an efficient source of light waves emitted at various frequencies, usually associated with third-order optical nonlinearities. Whereas attention has mostl…
physics.optics2025
Harmonic Structure of the Brunel spectra
Paul David, Fabrice Catoire, Luc Bergé
Electromagnetic emissions, known as Brunel radiations, are produced in plasmas through the coupling between the free electron density and ultrafast ionizing laser pulses. The radia…
physics.optics2024
Universal properties of locally generated terahertz waveforms from polarization-controlled two- and multi-color ionizing fields
H. Alirezaee, S. Skupin, V. Vaicaitis +4
The polarization states of terahertz (THz) radiation generated in a photo-ionized gas driven by strong two- or multi-frequency fields with locally controlled polarization are studi…