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Krijnen, G.J.M. and Hoekstra, H.J.W.M. and Stegeman, G.I. and Torruellas, W.E. (1996) Cerenkov second-harmonic generation in the strong conversion limit: New effects. Optics letters, 21 (12). pp. 851-853. ISSN 0146-9592 *** ISI Impact 3,399 ***
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Using beam propagation method calculations, we show that new effects occur for second-harmonic generation in the Čerenkov regime when it is optimized for efficient coupling to leaky modes. The fundamental throughput becomes independent of the input power over a few decades; i.e., optical power limiting is found. At even higher input powers, the fundamental throughput abruptly switches back to approximately the input power as a consequence of generating coupled second-harmonic-fundamental solitary waves in the waveguide because of the cascading effect.
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