Bottle of Dust and Light
This photo presents a tangible manifestation of a 3D caustic surface. This effect was achieved by collimating light rays from lasers of two different colors and directing them onto an optical device that was fabricated using additive manufacturing, featuring an interface with an elliptical profile specifically designed for this purpose.
[OPN 2025 Photo Contest Third Place]
— Osvaldo Ponce-Hernández and Maximino Avendaño-Alejo, Universidad Nacional Autónoma de México, Mexico City, Mexico