Elementary mathematics brings Star Trek's Holodeck closer to reality

For many years we have been hearing that holographic technology is one step closer to realizing Star Trek's famous Holodeck, a virtual reality stage that simulates any object in 3D as if they are real. Sadly, 3D holographic projection has never been realized. A team of scientists from Bilkent University, Turkey, again raised our hopes on Holodeck realization by showing the first realistic 3D holograms that can be viewed from any angle.

Dr. Ghaith Makey, the lead author of the paper appearing in the April 2019 issue of Nature Photonics, says "Our technique can work in realtime, and will surely pave the way to dynamic 3D video holography. Soon, it may be possible to create a simple version of a Holodeck".

3D holographic projection relies on back-to-back stacking of a large number of 2D images. The problem is, they cross-talk! Interference between the images makes the 3D projection fuzzy and far from realistic looking. The expectations have always been placed on the development of optical technology. Prof. F. Omer Ilday, the co-leader of the project, disagrees: "The reason of this cross-talk is the mathematics, not shortcomings of the physical components. Any pair of high-dimensional mutually random vectors tend to be orthogonal.

This basic result is a consequence of the Central Limit Theorem and the Law of Large Numbers. We use this property, together with a neat, but straightforward wavefront engineering trick to add random phase to each image, to eliminate cross-talk without using any additional optics".

Prof. Onur Tokel, the other co-leader, adds "It was not possible to simultaneously project a 3D object's back, middle and front parts. We solve this issue through a simple connection between the equations developed by Jean-Baptiste Joseph Fourier and Augustin-Jean Fresnel in the early days of the field. Using this math property, we advance the state-of-the-art from the projection of 3-4 images to 1000 simultaneous projections!"

"The best part is that 3D projection performance will become better and better with increasing hologram resolution because the orthogonality result becomes exact for infinite dimensions - as display technologies continue to improve and support higher-resolution, they enable ever more realistic looking holograms using our technique," says Dr. Makey. The team believes that the full potential of holography may be unleashed if such a 3D capability is at hand.

"Our holograms already surpass all previous digitally synthesized 3D holograms in every quality metric. Our method is universally applicable to all types of holographic media, be they static or dynamic holograms. Therefore, opportunities are vast. Immediate applications may be in 3D displays for medical visualization or air traffic control, but also laser-material interactions and microscopy" says Prof. Serim Ilday of the Bilkent team.

"The most important concept associated with holography has always been the third dimension. This is even more clear with our new 3D projection capability. Many challenges remain, but we are one step closer to the visions defined by Holodeck in Star Trek; or Holovision of Isaac Asimov in the Foundation novels. Even Jules Verne touched upon the idea, in his book Carpathian Castle published in 1892," adds Dr. Tokel.

Research paper

Related Links
Bilkent University Faculty of Science
Space Technology News - Applications and Research

Tweet

Thanks for being there;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Monthly Supporter
$5+ Billed Monthly

paypal only

SpaceDaily Contributor
$5 Billed Once

credit card or paypal

Rapid magnetic 3D printing of human cells
Hamilton, Canada (SPX) Mar 27, 2019
Imagine being able to visit your physician, and instead of being given a one-size-fits-all treatment, you are given a specifically customized medication for your symptoms. A team of McMaster University engineers has found a way to use 3D printing technology to create artificial tumours to help researchers test new drugs and therapies, which could lead to personalized medicine. Currently, for researchers to study human health, testing is very expensive and time consuming. Research to le ... read more