title: Effects on profile depth of changes in the thickness of the photoresist layers.
abstract: We propose a model to describe the behavior of the absorption profile as a function of the thickness changes of the photoresist layers (Shipley 1350-J), used to make high-quality holographic elements. We also show that the surface topology of the substrate is an important parameter that modulates the layer's thickness on the substrate. We obtain a depth modulation Δd in the exposure time (assuming a uniform irradiance), which is brought about by changes in the thickness of the photoresist layers at different points on the substrate; the thickness parameter is a function of the absorption coefficient of the photoresist.
authors.forename: A
authors.initials: A
authors.lastname: Olivares-Pérez
authors.forename: D
authors.initials: D
authors.lastname: Malacara
authors.forename: C E
authors.initials: CE
authors.lastname: Solano S
authors.forename: J P
authors.initials: JP
authors.lastname: Isaksen