Patent ID: 8404173

Claim:
A method for fabricating three-dimensional micro-structures directly from computer models, the method comprising: placing a photoreactive material into a container wherein at least a part of the container is optically transparent so that said photoreactive material is accessible by light; modifying said photoreactive material by non-degenerate two-photon absorption, wherein said modifying includes: directing, inside said photoreactive material, one or more first light pulses comprising a pulsed patterned source light having a first wavelength range so as to form an image of pulsed patterned source light; directing, inside said photoreactive material, one or more second light pulses having a second wavelength range so that the one or more second light pulses intersect the image of pulsed patterned source light and preselected portions of the photoreactive material are modified within a fabrication region, wherein said first wavelength range is different from said second wavelength range; whereby at least certain photons of the one or more first light pulses intersect with at least certain photons of the one or more second light pulses to effect non-degenerate two-photon absorption within said photoreactive material.