Laser forward transfer using structured light

RCY Auyeung, H Kim, S Mathews, A Piqué - Optics express, 2015 - opg.optica.org
RCY Auyeung, H Kim, S Mathews, A Piqué
Optics express, 2015opg.optica.org
A digital micromirror device (DMD) is used to spatially structure a 532 nm laser beam to print
features spatially congruent to the laser spot in a laser-induced forward transfer (LIFT)
process known as laser decal transfer (LDT). The DMD is a binary (on/off) spatial light
modulator and its resolution, half-toning and beam shaping properties are studied using
LDT of silver nanopaste layers. Edge-enhanced “checkerboard” beam profiles led to a~ 30%
decrease in the laser transfer fluence threshold (compared to a reference “checkerboard” …
A digital micromirror device (DMD) is used to spatially structure a 532 nm laser beam to print features spatially congruent to the laser spot in a laser-induced forward transfer (LIFT) process known as laser decal transfer (LDT). The DMD is a binary (on/off) spatial light modulator and its resolution, half-toning and beam shaping properties are studied using LDT of silver nanopaste layers. Edge-enhanced “checkerboard” beam profiles led to a ~30% decrease in the laser transfer fluence threshold (compared to a reference “checkerboard” profile) for a 20-pixel bitmap pattern and its resulting 10-μm square feature.
opg.optica.org
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