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Asymmetric two-beam coupling

FIgurs 3. The dependence of diffraction efficiency on applied dc electric field for a PN/KtCgg DEANST composite film (A f, g=645nm, A, jj=632.8nm). The inset shows the beam intensity changes in an asymmetric two-beam coupling process (A=645nm). The arrows denote the moments of switching the electric field "on" and "off". (After Ref. 29). [Pg.89]

The photorefractive effect is usually probed by two beam-coupling experiments, in which one beam gains intensity at the expense of the other. This coupling is a characteristic property of the photorefractive effect. Such an asymmetric coupling requires an asymmetric shifting of the refractive index grating... [Pg.373]

See other pages where Asymmetric two-beam coupling is mentioned: [Pg.3684]    [Pg.220]    [Pg.248]    [Pg.249]    [Pg.5653]    [Pg.918]    [Pg.3684]    [Pg.220]    [Pg.248]    [Pg.249]    [Pg.5653]    [Pg.918]    [Pg.231]    [Pg.236]    [Pg.228]    [Pg.236]    [Pg.325]    [Pg.343]    [Pg.354]    [Pg.184]    [Pg.21]    [Pg.226]   
See also in sourсe #XX -- [ Pg.89 ]



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Two-beam coupling

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