Interative-phase method for diffractively levelling the gauss beam intensity

Golub .., Doskolovich L.L., Kotlyar V.V., Nikolsky I.V., Soifer V.A.

Abstract:
The phase diffractive optical element that transforms the Gaussian collimated beam into the uniformly illuminated rectangle has been calculated. In computing the phase function we have employed an adaptive iterative algorithm which is generalization of the Gerchberg-Saxton method. The smooth phase function derived using geometrical optical methods has been used as an initial approximation.

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