Curved light is an intriguing caustic phenomenon 2 common in nature and in everyday life; examples range from rainbows 3 to the bright light patterns that appear on the sea floor when sun shines on ...

Finite-energy Airy beams were first introduced in the field of optics in 2007 (refs 1, 2) as new non-diffracting wavepackets in one and two spatial dimensions. The Airy function, describing the ...