MULTIPHOTON ABSORPTION METHOD USING PATTERNED LIGHT

摘要

Methods for producing a region of at least partially reacted material in a photoreactive composition and apparatus. The methods include: providing a photoreactive composition; providing a source of sufficient light for simultaneous absorption of at least two photons by the photoreactive composition; providing an exposure system capable of inducing image-wise multiphoton absorption; generating a non-random three-dimensional pattern of light by means of the exposure system; and exposing the photoreactive composition to the three-dimensional pattern of light generated by the exposure system to at least partially react a portion of the material in correspondence with the non-random three-dimensional pattern of light incident thereon.