TY - JOUR
T1 - Laser galvanometric scanning system for improved average power uniformity and larger scanning area
AU - Yang, Pei Ming
AU - Lo, Yu Lung
AU - Chang, Yuan Hao
N1 - Funding Information:
Ministry of Science and Technology (MOST) (MOST 103-2218-E-006-016). The research was also partially supported by the Ministry of Education, Taiwan, and National Cheng Kung University (NCKU) under the "Aim for Top University" project. Also, the Zemax module in analyzing a commercial F-theta lens (Model: 4401-508-000-21) supplied by Qioptiq is appreciated.
Publisher Copyright:
© 2016 Optical Society of America.
PY - 2016/7/1
Y1 - 2016/7/1
N2 - A new laser galvanometric scanning optical system incorporating a dynamic-tilt focusing lens is proposed to improve the laser spot performance in adaptive manufacturing applications. The simulations focus specifically on the laser spot size, the spot profile, the spot position, the spot energy distribution, and the size of the scanning working field. It is shown that for a designed spot size of 50 μm, the proposed system achieves an average spot size of 50.5 μm. Moreover, the maximum position deviation of the laser beam is reduced from (x = -3.02%, y = 1.30%) in a traditional scanning system to (x = -0.055%, y = 0.162%) in the proposed system. Finally, the maximum working field area is increased by around 240% compared to that of a traditional system. Overall, the results show that the proposed laser galvanometric scanning system achieves a small spot size, a symmetrical and round spot profile, a uniform spot energy distribution, and a large working area. As a result, it is ideally suited to rapid prototyping applications.
AB - A new laser galvanometric scanning optical system incorporating a dynamic-tilt focusing lens is proposed to improve the laser spot performance in adaptive manufacturing applications. The simulations focus specifically on the laser spot size, the spot profile, the spot position, the spot energy distribution, and the size of the scanning working field. It is shown that for a designed spot size of 50 μm, the proposed system achieves an average spot size of 50.5 μm. Moreover, the maximum position deviation of the laser beam is reduced from (x = -3.02%, y = 1.30%) in a traditional scanning system to (x = -0.055%, y = 0.162%) in the proposed system. Finally, the maximum working field area is increased by around 240% compared to that of a traditional system. Overall, the results show that the proposed laser galvanometric scanning system achieves a small spot size, a symmetrical and round spot profile, a uniform spot energy distribution, and a large working area. As a result, it is ideally suited to rapid prototyping applications.
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U2 - 10.1364/AO.55.005001
DO - 10.1364/AO.55.005001
M3 - Article
AN - SCOPUS:84978910924
SN - 1559-128X
VL - 55
SP - 5001
EP - 5007
JO - Applied optics
JF - Applied optics
IS - 19
ER -