Optical Display System Based On Photochemical Nucleation
Original Publication Date: 1979-Mar-01
Included in the Prior Art Database: 2005-Feb-20
One example of a beam-addressable optical display system that utilizes photo-nucleation at specific locations in a supersaturated vapor is shown in the drawing. A laser 10, for example, a helium-cadmium laser, is deflected by an acousto-optic light deflector 12 into a chamber 14 containing a supersaturated vapor 16. The vapor 16 may be, for example, heptane or nonane containing on the order of 10 to 100 ppm of a dopant that can absorb laser light. Examples of dopants are nitrogen dioxide, o-nitrotoluene, benzoic acid and p-tolualdehyde.