Acousto-optic scanning multiphoton lithography based on spatial optical switch (IMAGE)
Caption
(a) The schematic of the AOSS. The laser beam is deflected by inertial-free acousto-optic scanning. The wavefront of deflected laser is aberration-free due to the AODy being driven by a non-linear swept signal. Then the laser is switched by a multi-split spatial optical switch, which contains a DOE to split the laser into multi-beams and a digital mask to switch beams individually with different areas adjacent to each other. The switched beams are tightly focused by a high N.A. objective and selectively exposure the resin to produce the patterned polymer. The pattern is displayed on the digital mask. (b) The comparison of the wavefront while the AODy is driven by a linear swept signal and a non-linear swept signal, respectively. (c) The schematic of the printing process of a stone bridge printed by eight-foci AOSS. (d) The SEM image of the printed bridge. The bridge is printed in 130 ms. (e) The color processing area of the SEM image in (d). Different colored areas represent the independent scanning area of 8 focal points. The scanning ranges of each focal spot are connected to form a whole volume.
Credit
By Binzhang Jiao, Fayu Chen, Yuncheng Liu, Xuhao Fan, Shaoqun Zeng, Qi Dong, Leimin Deng, Hui Gao and Wei Xiong.
Usage Restrictions
Credit must be given to the creator. Only noncommercial uses of the work are permitted.
License
CC BY-NC