Energy exchange between orthogonally polarized waves by cascaded quasi-phase-matched processes
Date
2008
Authors
Johnston, Benjamin F
Dekker, Peter
Saltiel, Solomon
Withford, Michael
Kivshar, Yuri
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Publisher
SPIE - The International Society for Optical Engineering
Abstract
By identifying appropriate quasi-phase-matching (QPM) conditions in z-cut congruent lithium niobata, 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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Keywords
Keywords: Energy exchange; Quasi phase matched processes; Harmonic generation; Lithium compounds; Phase matching; Polarization; Wave propagation Lithium niobate; Nonlinear optics
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Source
Proceedings of SPIE - Progress in Biomedical Optics and Imaging
Type
Journal article
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2037-12-31