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Photographic recording of spatially modulated coherent light, such as is encountered in wavefront reconstruction or coherent optical data processing, is described in terms of the amplitude transmittance (Ta) vs exposure (E) curve of the film. It is proposed that the Ta−E curve is more appropriate for this application than the D−log E curve. The nonlinear effects of recording are analyzed in this context using a nonlinear “circuit” model. A general expression for the resulting amplitude transmittance is derived by use of a Fourier-transform technique. A specific nonlinearity, the error-function limiter, is analyzed in detail to illustrate the effects of the film nonlinearity.
A. Kozma (1966) studied this question.