title: Versatile digital micromirror device-based method for the recording of multilevel optical diffractive elements in photosensitive chalcogenide layers (AMTIR-1).
abstract: A new alternative and versatile method for the production of diffractive optical elements (DOEs) with up to four phase levels in AMTIR-1 (Ge33As12Se55) layers is demonstrated. The developed method proposes the use of the photosensitive properties of the layers and a specific in situ optical monitoring coupled with a reverse engineering algorithm to control the trigger points of the writing of the different diffractive patterns. Examples of various volume DOEs are presented.
authors.forename: Alexandre
authors.initials: A
authors.lastname: Joerg
authors.forename: Mael
authors.initials: M
authors.lastname: Vignaux
authors.forename: Julien
authors.initials: J
authors.lastname: Lumeau