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26 April 2024 |
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Energy exchange properties during second-harmonic generation in finite one-dimensional photonic band-gap structures with deep gratings | | Giuseppe D’Aguanno
; Marco Centini
; Michael Scalora
; Concita Sibilia
; Mario Bertolotti
; Mark J Bloemer
; Charles M Bowden
; | | Date: |
31 Dec 2002 | | Journal: | Phys Rev E, 67 (1 Pt 2), 016606 | | Abstract: | We study second-harmonic generation in finite, one-dimensional, photonic band-gap structures with large index contrast in the regime of pump depletion and global phase-matching conditions. We report a number of surprising results: above a certain input intensity, field dynamics resemble a multiwave mixing process, where backward and forward components compete for the available energy; the pump field is mostly reflected, revealing a type of optical limiting behavior; and second-harmonic generation becomes balanced in both directions, showing unusual saturation effects with increasing pump intensity. This dynamics was unexpected, and it is bound to influence the way one goes about thinking and designing nonlinear frequency conversion devices in a practical way. | | Source: | PubMed, pmid12636624 | | Services: | Forum | Review | Favorites | |
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