Title :
Second harmonic stimulated Raman scattering of laser radiation in a plasma
Author :
Ramachandran, K.
Author_Institution :
Dept. of Phys., Indian Inst. of Technol., Delhi, India
fDate :
4/1/1996 12:00:00 AM
Abstract :
A high-power linearly polarized laser propagating through a plasma produces oscillatory electron velocity at the second harmonic due to-the ν&oarr;×B&oarr; force, This velocity couples a Langmuir wave (ω, k&oarr;) and an electromagnetic wave (ω1, k&oarr;1), where ω1=ω-2ω0 , k-2k&oarr;0 and ω0, k&oarr;0 are frequency and wavenumber of the laser pump, causing second harmonic Raman scattering. The growth rate is maximum for side scattering. This process can occur above the quarter critical density, unlike the first harmonic stimulated Raman scattering which occurs below the quarter critical density
Keywords :
plasma Langmuir waves; plasma light propagation; plasma oscillations; stimulated Raman scattering; Langmuir wave; electromagnetic wave; laser radiation; linearly polarized laser propagation; oscillatory electron velocity; plasma; quarter critical density; second harmonic stimulated Raman scattering; Electromagnetic coupling; Electromagnetic propagation; Electromagnetic scattering; Electromagnetic wave polarization; Electrons; Frequency; Optical coupling; Optical propagation; Plasma waves; Raman scattering;
Journal_Title :
Plasma Science, IEEE Transactions on
