Technology developed to control light scattering using holography

Jul 11, 2013
Figure 1. Observed images.

Recently, a popular article demonstrated that opaque glass becomes transparent as transparent tape is applied to the glass. The scientific principle is that light was less scattered as the rough surface of the opaque glass is filled by transparent tape. Professor Yong Keun Park from KAIST's Department of Physics, in a joint research with MIT Spectroscopy Lab, has developed the technology to easily control light scattering using holography. Their results are published on Nature's Scientific Reports May 29th online edition.

This technology allows us to view xobjects behind visual obstructions such as cloud or smoke, as well as visual xobjectives behind xobjects that highly scatters light such as . The research team applied the holography technology that records both the direction and to control of the xobjects between the observer and the visual xobjective. The team was able to retrieve the original image by recording the information of and reflecting the light precisely to the other side.

Figure 2. The principles of light scattering control.

This phenomenon is known as phase conjugation in physics. Professor Park's team was the first in the world to apply phase conjugation and digital holography to observe two-dimensional image behind a highly scattering wall. "This technology will be applied to in many fields of physics, optics, nanotechnology, medical science, and even military science," said Professor Park. "This technology is different from what is commonly as penetrating camera or invisible clothes," he nevertheless drew the line at overinterpretating the technology, "Currently, the significance is on the development of the technology itself that allows us to accurately control the scattering of light."

Explore further: Graphene and graphExeter combine to create a new flexible, transparent, photosensitive device

add to favorites email to friend print save as pdf

Related Stories

Looking through the opaque screen for sharper images

Dec 07, 2012

Taking images through opaque, light-scattering layers is a vital capability and essential diagnostic tool in many disciplines, including nanotechnology and the biosciences. Current techniques are unable to ...

Manipulating Lorentz and Fano spectral line shapes

May 13, 2013

(Phys.org) —It is widely known that the optical properties of certain materials can be modified by using lasers to control the quantum states of their optical electrons. Lasers that can generate ultra-short ...

Recommended for you

Could 'Jedi Putter' be the force golfers need?

10 hours ago

Putting is arguably the most important skill in golf; in fact, it's been described as a game within a game. Now a team of Rice engineering students has devised a training putter that offers golfers audio, ...

Better thermal-imaging lens from waste sulfur

Apr 17, 2014

Sulfur left over from refining fossil fuels can be transformed into cheap, lightweight, plastic lenses for infrared devices, including night-vision goggles, a University of Arizona-led international team ...

User comments : 0

More news stories

Could 'Jedi Putter' be the force golfers need?

Putting is arguably the most important skill in golf; in fact, it's been described as a game within a game. Now a team of Rice engineering students has devised a training putter that offers golfers audio, ...

Treating depression in Parkinson's patients

A group of scientists from the University of Kentucky College of Medicine and the Sanders-Brown Center on Aging has found interesting new information in a study on depression and neuropsychological function in Parkinson's ...