Simultaneously phase-matched enhanced second and third harmonic generation
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Author/Creator ORCID
Date
2001-09-24
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Citation of Original Publication
M. Centini et al., Simultaneously phase-matched enhanced second and third harmonic generation, Phys. Rev. E Vol. 64, Iss. 4 (2001), https://doi.org/10.1103/PhysRevE.64.046606
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Public Domain Mark 1.0
This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
Public Domain Mark 1.0
This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
Subjects
Abstract
Second and third harmonic generation via a χ⁽²⁾ three-wave mixing process can occur with high conversion efficiency in a one-dimensional photonic band gap structure. We find that it is possible to simultaneously achieve enhancement and exact phase-matching conditions of second harmonic and sum frequency generation, ω+2→ω3ω. It is also remarkable that high conversion efficiencies persist under tuning conditions that correspond to a phase mismatch. While these conditions are quite unusual and cannot be achieved in any known bulk material, we show that they can be easily obtained in finite layered structures by using and balancing an interplay between material dispersion and the geometrical dispersion introduced by the structure.