Abstract

The resolution power of dry photopolymer films for the relief recording of computer-generated diffractive optical elements (without processing) is not more than 30 lines/mm. This and also the nonlinearity of the recording response due to the dye bleaching effect should be taken into account in adjusting the final relief surface shape of the diffractive zones. Such accounting has been done on the amplitude mask preparation stage by introducing corrections into generated amplitude function. Nonlinear correction has been found to match well the nonlinearity of the polymer response. Adjustment of the relief structure zones' top and bottom levels has been measured. Recording layer chemical content has been found to influence the relief shape correction. In particular, for the layers with sufficient optical density the effect of relief self-correction has been observed.

© 1992 Optical Society of America