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Unformatted text preview: 1 fraction of total power z = ( 29 1/2 1 2 1 eff 1 2 (0) n n c d A = = distance over which fields exchange energy Estimate value for for typical system with power and spot size Assume optimal focusing, i.e. spot size chosen so that depth of focal region is equal to the length Then 2 1 1 0 1 2 2 P I n cA w = = P w w b L 2 1 1 2 w n b L = 1/2 2 2 w 2 w NLO crystal and which for typical values 1 P A c L = 1/2 2 2 eff 3 1 2 1 16 d LP z cn n = = 12 6 eff 4 10 1 cm =1 W 0.5 10 m =2 m V d L P n= = = 0.14 z = = b L =...
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 Fall '10
 Shalaev

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