We don’t know what cats see when they see a red laser beam, but we know it isn’t what we see. The reaction, at least for many cats — is instant and extreme. Of course, your cat ex… ...

3D plasma shapes created in thin air. ... The laser beam itself is invisible to the human eye but, ... The demonstration system uses an infra-red laser that creates a hundred flashpoints per second.

Only the heating effect is mentioned for the Thermal Laser, but it seems likely that a visible laser would also be incorporated if only as an adjunct to aiming. The photo here shows the Saber 203 ...

(Phys.org)—A team of researchers with Swinburne University of Technology in Australia has found a way to use two-beam super-resolution lithography to create 3D photonic "gyroid" nanostructures ...