Method and device for the layer-by-layer production of thin volume grating stacks, beam combiner for a holographic display as well as solar module and hologram component

摘要

Method for the layer-by-layer generation of at least one volume grating (VG) in a recording medium (AZM) by means of exposure, which has at least one light-sensitive layer that is sensitized for a predeterminable wavelength (λ) of the exposure light, - with a volume grating (VG) in each case Recording medium (AZM) is generated by at least two interference-capable wavefronts (WF1, WF2) of coherent light that are superimposed at a predeterminable depth (z) at a predeterminable angle (2θ) in the recording medium (AZM) with a predeterminable interference contrast V (z), and - where the depth (z) and thickness of the refractive index modulation and / or transparency modulation of a volume grating (VG) in the recording medium (AZM) in the direction of light propagation (z) by depth-dependent control of the spatial and / or temporal degree of coherence (Γ) of the interfering wavefronts ( WF1, WF2) is set.