System and method for rendering interactive aerial volumetric graphics and generating spatial audio using femtosecond lasers

A method of generating plasma, comprising:

• generating a femtosecond laser pulse beam;
• computing a computer generated hologram, said computer generated hologram including phase modulation values;
• modifying said femtosecond laser pulse beam using said computed phase modulation values to generate simultaneously addressed multiple voxels;
• directing said modified laser pulse beam to one or more focal points in air using a three dimensional scanner comprising a galvano scanner and a varifocal lens;
• and
• focusing the directed laser pulse beam to generate a tactile image without moving a lens that is closest to the tactile image.

A method of generating plasma, comprising:

• generating a plurality of femtosecond laser pulse beams;
• computing a computer generated hologram, said computer generated hologram including phase modulation values;
• modifying said plurality of femtosecond laser pulse beams using said computed phase modulation values to generate simultaneously addressed multiple voxels;
• directing said plurality of modified femtosecond laser pulse beams, alternately, to two or more focal points in air using a throe dimensional scanner comprising a galvano scanner and a varifocal lens;
• and
• providing a fixed objective lens that focuses the directed laser pulse beams to generate an aerial tactile image pattern, wherein said fixed objective lens is disposed closest to the aerial tactile image pattern.