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00838 am a22001453u 4500 |
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65849 |
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|a Major, Huw E.
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|a Gawith, Corin B.E.
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|a Smith, Peter G.R.
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|a Gouy phase compensation in quasi-phase matching
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|c 2008-10-01.
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|z Get fulltext
|u https://eprints.soton.ac.uk/65849/1/3903.pdf
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|a 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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