Multi-focus two-photon polymerization technique based on individually controlled phase modulation.
Multi-focus two-photon polymerization with a spatial light modulator is demonstrated. The spatial light modulator generates multi-focus spots via phase modulation technique controlled by a computer generated hologram (CGH) pattern. Each focus spot can be individually addressed in position and laser intensity. The multi-focus two-photon polymerization technique allows the fabrication of complex 2-D and 3-D structures both symmetric and asymmetric. Smooth sine curved polymerized lines with amplitude of 5 microm and a period of 200 microm were obtained by fast switching of the CGH patterns.
Obata
Kotaro
K
Laser Zentrum Hannover eV, Hollerithallee 8, 30419 Hannover, Germany. k.obata@lzh.de
Koch
Jürgen
J
Hinze
Ulf
U
Chichkov
Boris N
BN
D004867:Equipment Design; D006696:Holography / Q000295:instrumentation*; D007834:Lasers; D017785:Photons; D058105:Polymerization