Virtual and augmented reality gadgets need to map surrounding, locate objects and track gestures to create surreal and engaging experiences. And, to be ubiquitous, they need to do so over larger spaces in bright outdoor conditions using as few as possible tiny, low-cost and low-power sensors. Join this talk to see how Lumotive’s Meta-Lidar technology makes it possible with a single sensor — making AR/R experiences real.
Aluminum oxide single crystals doped with magnesium and carbon and having aggregate vacancy defects are proposed
for volumetric fluorescent bit-wise data storage. A unique optical recording technique, which utilizes sequential two-photon
absorption and incoherent confocal fluorescence detection, is utilized for nondestructive readout. The new
medium is exceptionally environmentally and temporally stable and can be recorded with diode lasers. Recent static and
dynamic test stand results are reported, including demonstration of 20 layers of data and random mark-length recording
with a clear "eye pattern" and satisfactory carrier-to-noise ratio.
Recording and readout in two-photon absorbing Al2O3:C,Mg optical data storage media was investigated for crystals having different concentrations of color centers and for two orientations of the crystal optical c-axis. The writing and reading efficiency of the media was increased by taking into account the anisotropy of optical absorption and by rotating the laser light polarization vector synchronously with the disk rotation. The parameters for writing and non-destructive reading of the bits in the volume of a single crystal disk are reported.
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