Glass into Glass
A 405-nm laser is shone through the marble ball from a Codd-neck bottle of the Japanese soft drink Ramune, which focuses the beam into a glass table. The yellow and green fluorescent responses likely arise from dopants such as uranium, manganese, cadmium or other elements or molecules in the glasses excited by the near-UV emission. [OPN 2024 Photo Contest Third Place Tie]
—Michael A. Gachich, University of Illinois Urbana-Champaign, Champaign, IL, USA