Multi-terabit/in2 holographic data storage demonstration

We report on the demonstration of holographic data storage (HDS) at a raw areal bit density of 2.2 Tbit/in 2 . The demonstration was performed on a platform incorporating several new technical innovations. One key innovation – the coherent data channel – was successfully introduced ahead of schedule following encouraging early results. Issues of media recording efficiency and carrier wavefront demodulation for homodyne detection are discussed.