Spatio-temporal doubly periodic waves in phase-mismatched second-harmonic generation

Zhixiang Deng, Jin Zhang, Dianyuan Fan & LIFU ZHANG
In this Letter we present the analytical and numerical investigation to characterize the formation of quadratic doubly periodic waves, originating from coherent modulation instability in a dispersive quadratic media in the regime of cascading second-harmonic generation. Such an endeavor has not been undertaken before despite the growing relevance of double-periodic solutions as the precursor of highly localized wave structures. Unlike the case with cubic nonlinearity, the periodicity of these quadratic nonlinear waves can be also...
1 citation reported since publication in 2022.
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