Fig. 5: Ultra-compact holographic VCSEL chip with ultra-high frame rate.
From: GHz dynamic holographic VCSEL chip via current-addressed modes multiplexing
a Photo of the on-chip measurement system to characterize the display performances (Left panel). The holographic VCSEL chip was powered via a metal probe that contacts the p-electrode (bottom right). The holographic images can be dynamically switched when changing the injection currents (upper right). b SEM images of a holographic VCSEL chip comprising 2*2 hologram devices array. c Current-switching holographic display. d Current-switching 3D holographic display at separate image planes. e The modulation response-frequency curve of the VCSEL chip, indicating a bandwidth of 1.93 GHz at −3 dB.
