ifuckingloveminerals2:Green Laser through Optical Calcite From Minas Gerais in Brazil comes this 4&a
ifuckingloveminerals2:Green Laser through Optical Calcite From Minas Gerais in Brazil comes this 4" wide specimen of optical calcite placed upon a reflective CD-R disc. A green laser beam is directed through the crystal in the direction shown by the arrow. Green laser light is scattered as it enters and exits the calcite. Within the calcite the laser beam stimulates red fluorescence likely due to manganese impurities.The photo was taken through red laser goggles acting as a high Q magenta (green rejection) notch filter.Source: 1, 2, 3 -- source link