Gouy phase compensation in quasi-phase matching |
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| Authors: | Huw E. Major Corin B.E. Gawith Peter G.R. Smith |
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| Affiliation: | aOptoelectronics Research Centre, University of Southampton, University Road Highfield, Southampton, Hampshire SO17 1BJ, UK |
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| Abstract: | In any focussed nonlinear interaction the focus induced phase shift, known as the Gouy phase shift, provides an imperfection in phase matching for any linearly invariant material. However, using an appropriately designed quasi-phase matched structure it is theoretically possible to compensate for the deleterious effects of the Gouy phase shift, allowing a symmetric frequency response and tighter optimal focussing than in a uniform material. |
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| Keywords: | Quasi-phase matching Gaussian beam Focussing Gouy phase |
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