Open AccessLaser forward transfer using structured light
Author(s) -
R. C. Y. Auyeung,
Heung Soo Kim,
Scott A. Mathews,
Alberto Piqué
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.000422
Subject(s) - optics , laser , digital micromirror device , materials science , spatial light modulator , checkerboard , fluence , physics , geometry , mathematics
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.