Focusing effects for lasing processes on fifth-order nonlinear susceptibility in isotropic media
Focusing effects for lasing processes on fifth-order nonlinear susceptibility in isotropic media
A.N. Dubovik
Frequency mixing in focused beams on a fifth-order nonlinear susceptibility in isotropic media is discussed the oretically. A detailed investigation is made of the behavior of focusing functions, analytical solutions are found, and conditions under which these solutions are valid are ascertained. Power optimization in focusing is discussed for all processes involved. Cascade processes in focused beams are discussed cursorily.
Show AbstractTheory of transient stimulated raman scattering at saturation
Theory of transient stimulated raman scattering at saturation
G.P. Dzhotyan, Yu.E. D'yakov, and V.G. Sushko
Transient stimulated Raman scattering (SRS) is investigated. Computer solutions (using the BESM-6 digital computer) are found for a system of nonl inear SRS equations corresponding to a variety of excitation conditions. The possibility of a Raman lasing mode in which pumping breaks down into a sequence of subpulses is demonstrated. The underlying theory is developed. Effects of differences in group velocities on the shape and inertia of the Stokes pulse are discussed.
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