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A New Type Of Media: Nano-Structured Glass

Optical Vortex Converter

“University of Southampton researchers have developed new nano-structured glass, turning it into new type of computer memory, which has applications in optical manipulation and will significantly reduce the cost of medical imaging.

In a paper entitled Radially polarized optical vortex converter created by femtosecond laser nanostructuring of glass published in Applied Physics Letters, a team led by Professor Peter Kazansky at the University’s Optoelectronics Research Centre, describe how they have used nano-structures to develop new monolithic glass space-variant polarisation converters.

These millimetre-sized devices change the way light travels through glass, generating ‘whirlpools’ of light that can then be read in much the same way as data in optical fibres. This enables more precise laser material processing, optical manipulation of atom-sized objects, ultra-high resolution imaging and potentially, table-top particle accelerators. Information can be written, wiped and rewritten into the molecular structure of the glass using a laser.”

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