On the long time holographic grating recording process in azo-polymer

Sobolewska, Anna; Bartkiewicz, Stanislaw
September 2009
Applied Physics Letters;9/21/2009, Vol. 95 Issue 12, p123302
Academic Journal
The authors report on a complex diffraction efficiency dynamics of the holographic grating recording process in azobenzene-functionalized polymer for a long recording time. The nonexponential dynamics was explain by the mechanism which assumes (i) simultaneous formation of three coupling phase gratings with constant, equal 0 or π, phase shifts between them and (ii) occurrence of gratings erasure processes when the recording time is long. Based on these assumptions and applying the Bessel function, the diffraction efficiency dynamics was calculated.


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