6 papers
Second Harmonic Generation Through Backward Raman Scattering in Magnetized Plasmas Driven by Circularly Polarized Intense Lasers
S. S. Ghaffari-Oskooei, A. A. Molavi Choobini
A fluid-based theoretical framework is developed to describe the nonlinear cascade linking primary BRS-driven plasma wave amplification, oscillating two-stream instability (OTSI),…
Enhanced Harmonic Generation in Terahertz FELs: Influence of Pre-Bunching and Undulator Geometry on Spectral and Angular Emission
A. A. Molavi Choobini, S. S. Ghaffari-Oskooei, F. Farahi +1
Both theoretical and numerical analyses are conducted to investigate terahertz (THz) radiation emission from free-electron lasers. The angular and spectral characteristics of radia…
Mechanisms of THz Radiation Generation in Multi-Color Laser-Plasma Interactions: A Review Across Diverse Media
A. A. Molavi Choobini, S. S. Ghaffari-Oskooei, M. Shahmansouri +1
The exploration of Terahertz (THz) waves has captivated researchers across diverse scientific disciplines such as physics, spectroscopy, chemistry, biology, and engineering, driven…
Hydrodynamic PIC analysis of THz generation by two color laser in various plasma gases
A. A. Molavi Choobini, S. S. Ghaffari-Oskooei
In the present study, a theoretical and PIC numerical investigation of THz emission driven by two color femtosecond laser fields in gaseous plasmas is conducted. The model is formu…
Forward Raman Scattering and Self-Modulation instabilities of lasers in magnetized tapered plasma channels
S. S. Ghaffari-Oskooei, A. A. Molavi Choobini
The propagation of laser pulses in tapered magnetized plasma channels is analyzed using the fluid theory of cold plasmas. This study focuses on laser propagation's key instabilitie…
Two-plasmon decay instability and 3/2 harmonic generation in inhomogeneous magnetized plasma
S. S. Ghaffari-Oskooei, A. A. Molavi Choobini
Two-plasmon decay instability emerges as the parametric decay of laser beams into two plasma waves which is expected for hohlraum in inertial confinement fusion. The behavior of th…