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What is a frequency comb?

1:16

Paul Williams provides an accessible introduction to optical frequency combs

International Year of Light 2015

2015 is the International Year of Light and Light-based Technologies (IYL 2015), as declared by the United Nations.

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How do you make the perfect lens?

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How can quantum techniques improve the efficiency of solar cells?

Chris Phillips describes a novel approach to capturing sunlight

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How do you produce laser light with bespoke colours?

It’s a bit like kicking a football in a valley

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