Active Materials & Manufacturing Chemistry

Super-polished Freeforms Optical Systems (SFOS) for industry and nuclear fusion

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AI plain-English summary

Lenses and mirrors shaped like potato chips, rather than simple spheres, could radically shrink and simplify the world’s most powerful laser systems—including those designed to ignite nuclear fusion. Today’s optical manufacturing can produce these complex “freeform” surfaces only with difficulty, and cannot make them smooth enough to survive high-energy laser beams without damage. This project aims to build a commercial manufacturing process that delivers nano-scale-accurate, super-smooth freeforms at scale. The immediate test case is laser fusion, where replacing hundreds of conventional optics with a handful of freeforms could turn a sprawling facility into something far more practical. If the manufacturing solution works, the impact extends well beyond fusion. Next-generation semiconductor photolithography—the process that prints ever-smaller transistors—depends on freeform optics to keep Moore’s Law alive. The consortium estimates that 4% of the global precision optics market, worth $2.4 billion, will shift to freeforms within five years. Success would also create a new supply chain opportunity for 7,000 UK companies and establish Britain as a global hub for freeform optical design and manufacture.

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This Proposal confronts manufacturing challenges that constrict the on-going revolution in complex ('freeform') optical surfaces, these promising radical performance-improvements, yet with fewer components. We focus primarily on resolving the lack of worldwide capability for nano-scale-accurate, super-smooth freeforms that i) can survive high laser-powers, and ii) meet emerging challenges in other applications, especially next-generation semiconductor photolithography. We take laser-fusion (US National Ignition Facility, NIF) as an example, the technology promising almost limitless energy, but requiring gross simplification -- one of the keys is free-form optics. The project thereby confronts key societal needs incl. sustainable manufacture, Big Data and 'green' energy. Our industry/research consortium has the expertise and facilities to tackle this head on, developing a unique commercial manufacturing solution. After IP protection, project outputs will then be widely disseminated. In doing so, our ambitions are to: (i) capture 4% ($2.4Bn) of the global optimal manufacturing and services market that will need to move to freeforms in the next 5 years, and (ii) establish a new supply chain opportunity for 7000 UK companies and (iii) create a new, globally competitive innovation ecosystem for optical freeform design and manufacture in the United Kingdom.

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Collaborative R&D

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