Answers are grounded in this paper and cite their sources.
We analyze second-harmonic generation (SHG) with focused pump beams in the high-conversion regime where pump depletion is significant. Numerical solutions of the coupled equations for pump and harmonic fields are obtained for the cylindrically symmetric case of collinear phase matching. The optimum values of phase mismatch and confocal parameters σ andbfound by Boyd and Kleinman are very nearly independent of pump power to above 95 percent conversion. When phase mismatch is not optimized, the best confocal parameter depends upon the input power. The conversion efficiency versus input power is determined numerically for optimumσ, b, and approximate analytical formulas are given for this relation.
No takes yet. Share an insight, caveat, or question.
White et al. (1970) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: