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Swinburne research reported in ABC Science

Tuesday March 8 2011

Centre for Micro-Photonics researchers in collaboration with the University of Shanghai for Science and Technology have recently observed for the first time a reversal of the Doppler effect. Published in the Nature Photonics journal and reported in ABC Science, the observation is an exciting precurser to an array of possible stealth and measurement applications.

To achieve the observation, the researchers created an artificial nanostructured crystal - known as a photonic crystal - out of silicon. The precise internal structure of the crystal allows for laser light to interact with it in an unnatural manner, bending light in the opposite direction than if a natural silicon crystal was utilised. As the light exited the crystal, a detector was used at different distances to measure the frequency of the laser light. Unlike the standard Doppler effect where the frequency increases as the detector moves toward the laser beam, the researches observed the frequency decreasing.

The ABC Science article can be found on the ABC website and the Nature Photonics journal article can be found at the Nature Publishing Group website. Swinburne Media Centre has also published an article including contact information.