Scientist tied “light in knots” - using hologram knot theory

19 01 2010

light-knots-created-in-the-lab-2.jpgUK scientists have “tied light in knots”, paving the way for new applications of laser technology. A team of physicists working at the universities of Bristol, Glasgow and Southampton accomplished the seemingly impossible feat using a series of holograms to control the flow of light.

The breakthrough could be used to offer unprecedented levels of precision in sophisticated applications that currently use lasers, such as speed cameras and measurement devices.

The pioneering British team implemented a previously abstract mathematical formula known as “knot theory”, which allowed them to manipulate light into “knots”, providing greater control over the direction and precision of the beam.

The sophisticated hologram design required for the experimental demonstration of the knotted light shows advanced optical control, which undoubtedly can be used in future laser devices.

Speaking on the exciting future of the home grown device, Professor Miles Padgett from Glasgow University, who led the experiments, said: “The sophisticated hologram design required for the experimental demonstration of the knotted light shows advanced optical control, which undoubtedly can be used in future laser devices.”

Source:http://www.telegraph.co.uk/science/science-news/7012307/A-team-of-scientists-managed-to-tie-light-in-knots.html