Energy exchange between orthogonally polarized waves by cascaded quasi-phase-matched processes

B. F. Johnston; P. Dekker; S. M. Saltiel; M. J. Withford; Y. S. Kivshar

doi:10.1117/12.759753

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8 January 2008 Energy exchange between orthogonally polarized waves by cascaded quasi-phase-matched processes

B. F. Johnston, P. Dekker, S. M. Saltiel, M. J. Withford, Y. S. Kivshar

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Proceedings Volume 6801, Photonics: Design, Technology, and Packaging III; 680116 (2008) https://doi.org/10.1117/12.759753
Event: SPIE Microelectronics, MEMS, and Nanotechnology, 2007, Canberra, ACT, Australia

Abstract

By identifying appropriate quasi-phase-matching (QPM) conditions in z-cut congruent lithium niobate, we demonstrate simultaneous QPM of type-I (ooe) and higher order type-0 (eee) second-harmonic-generation, which share a common second harmonic wave. We demonstrate this experimentally at 1064nm, and show that cascading between these processes occurs. The cascading can result in energy exchange between the cross-polarized fundamentals, indicative of an equivalent 3rd order process. The nonlinear phase shifts and transfer functions resulting from this cascading are explored numerically.

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B. F. Johnston, P. Dekker, S. M. Saltiel, M. J. Withford, and Y. S. Kivshar "Energy exchange between orthogonally polarized waves by cascaded quasi-phase-matched processes", Proc. SPIE 6801, Photonics: Design, Technology, and Packaging III, 680116 (8 January 2008); https://doi.org/10.1117/12.759753

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