Second harmonic stimulated Raman scattering of laser radiation in a plasma
Journal Article
·
· IEEE Transactions on Plasma Science
- Indian Inst. of Technology, New Delhi (India). Dept. of Physics
A high-power linearly polarized laser propagating through a plasma produces oscillatory electron velocity at the second harmonic due to the {rvec {upsilon}} x {rvec {Beta}} force. This velocity couples a Langmuir wave ({omega}, {rvec {kappa}}) and an electromagnetic wave ({omega}{sub 1}, {rvec {kappa}}{sub 1}), where {omega}{sub 1} = {omega} {minus} 2{omega}{sub 0}, {rvec {kappa}}{sub 1} = {kappa} {minus} 2{rvec {kappa}}{sub 0} and {omega}{sub 0}, {rvec {kappa}}{sub 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.
- OSTI ID:
- 264385
- Journal Information:
- IEEE Transactions on Plasma Science, Journal Name: IEEE Transactions on Plasma Science Journal Issue: 2 Vol. 24; ISSN ITPSBD; ISSN 0093-3813
- Country of Publication:
- United States
- Language:
- English
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