HoloBlade: an open-hardware spatial light modulator driver platform for holographic displays

Abstract

Spatial Light Modulators (SLMs) are a key research tool in several contemporary applied optics research domains. In this paper, we present the argument that an open platform for interacting with SLMs would dramatically increase their accessibility to researchers. We introduce HoloBlade, an open-hardware implementation of an SLM driver-stack and provide a detailed exposition of HoloBlade's architecture, key components and detailed design. An optical verification rig is constructed to demonstrate that HoloBlade is capable of providing Fourier imaging capability in a 4f system. Finally, we discuss HoloBlade's future development roadmap and the opportunities that it presents as a research tool for applied optics.

Effect of Bit-depth in Stochastic Gradient Descent Performance for Phase-only Computer-generated Holography Displays

“…This quantisation error leads to a reduction in SGD performance as it is not possible for our device to directly take the steepest gradient-descent path. [37], four-bit [38] and eight-bit [39] levels of modulation are all available with contemporary devices. These different modulation-level capabilites are shown overlaid on the complexplane in Figure 2.…”