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Polymer object optical fabrication process

  • US 8,404,173 B2
  • Filed: 07/06/2010
  • Issued: 03/26/2013
  • Est. Priority Date: 11/17/2006
  • Status: Active Grant
First Claim
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1. 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.

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