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Third-Order Sum-Frequency Generation in Droplets: Model with Numerical Resultsfor Third-Harmonic Generation

机译：液滴中的三阶和频生成：具有三次谐波产生的数值结果的模型

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A steady-state model of third-order sum-frequency generation (TSFG) in liquiddroplets is presented. A third order polarization is generated in a droplet by stimulated Raman scattering (SRS) or by SRS in combination with fields at the incident laser frequency. This third-order polarization radiates inside the sphere as described in the general model of Chew et al. The frequency of the third-order polarization will only rarely be within a few linewidths of a high-Q output morphology-dependent resonance (MDR). The TSFG intensity is proportional to the spatial and frequency overlap between the generating polarization and the fields of the output modes. For a distribution of particle sizes, the probability of detecting TSFG increases with the density of output MDRs. Numerical results are presented for the specific case of the generation of the third harmonic of the first-order SRS.

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