To create this laser shadow show, the team shone a high-powered green laser through a cube made of ruby. This was then lit up side-on by a blue laser, so the green light ends up blocking some of ...

The green light increases the absorption of the blue beam, creating a darker region that casts the shadow. The researchers measured a maximum contrast of around 22 percent, roughly the equivalent ...

The green laser acts like an ordinary object while the blue laser acts like illumination. The interaction between the two light sources created a shadow on a screen that was visible as a dark area ...

The green laser increases the optical absorption of the blue illuminating laser beam, creating a matching region in the illuminating light and creating a darker area that appears as a shadow of ...