Modern 3D hologram technology relies on the reconstruction of waveforms utilizing light to project an image. This is somewhat similiar to how AM and single sideband radio signals work. While that might sound like an unusual statement, it’s actually possible to make holograms of nearly any kind of wave using the same underlying principle that broadcasters rely on. Those who are looking to incorporate 3D hologram technology in their workflows may want to review a little basic wave physics.
The amplitude of a waveform refers to how high it’s greatest peaks are. By applying more force to the amplitude, you increase the peak envelope power of the waveform, thus making these locations much higher. The spacing between each peak is referred to as the frequency, which normally won’t change depending on how the wave is modulated. A hologram captures the overall amplitude, and samples it in much the same way that a pule-code modulated audio file captures sound on a computer.
Researchers have constructed devices that employ 3D hologram technology to essentially play a recorded waveform back in the manner of a record being played over the airwaves. Once the operator selects a visual recording, they’re free to have it projected into free space. Some sort of substrate, such as a suspension of dust, could be used to enhance the viewing experience by providing the project module with something to reflect off of.
In spite of the seemingly complex background, this technology is quickly evolving to the point where almost any organization could put it to use.