Towards Dynamic Holographic Laser Beam Shaping
Towards Dynamic Holographic Laser Beam Shaping
复制标题
DOI：
10.2961/jlmn.2015.02.0020
复制
发表时间：
2015-05-01
影响因子：
1.1
通讯作者：
Schmidt, Michael
中科院分区：
文献类型：
--
作者：
Baum, Marcus;Bechtold, Peter;Schmidt, Michael
平均功率超过100 W的高功率超短脉冲激光器在市场上有售。然而，这种激光器的成功转移到应用，特别是微结构，缺乏适当的工具。当今最有前途的策略是高速光束扫描或光束成形或多光斑生成方面的并行化。将这两种策略结合到一个设备中将是最有前途的工具，以达到比目前更高的处理效率。我们将介绍我们正在进行的第一个子步骤，以实现这样的设备，利用声光效应以及液晶调制器和相位全息图。第一个成果包括相位全息图的快速制造和使用声光偏转器的高速光束扫描和整形-达到1 μ s的光束形状切换时间。
High-power ultrashort pulsed lasers with average powers exceeding 100 W are commercially available. Yet, the successful transfer of such lasers into application, microstructuring in particular, lacks appropriate tools. The most promising strategies today are high-speed beam scanning or parallelization in terms of beam shaping or multi-spot generation. A combination of both strategies into one device would be the most promising tool to reach much higher processing efficiencies compared to date. We will present the first sub-steps we are undertaking to realize such devices, utilizing the acoustooptic effect as well as liquid crystal based modulators and phase holograms. First results include the rapid manufacturing of phase holograms and high-speed beam scanning and shaping using acoustooptical deflectors - reaching beam shape switching times of 1 mu s.