采用数字微镜器件(DMD)无掩模光刻技术,以飞秒激光为光源,结合大面积拼接的方法快速制备了具有较高分辨率和毫米尺寸的大面积微纳结构。提出以单子场投影线扫描的方式进一步改善由于光场能量分布不均匀引起的结构边缘粗糙的问题,极大地...采用数字微镜器件(DMD)无掩模光刻技术,以飞秒激光为光源,结合大面积拼接的方法快速制备了具有较高分辨率和毫米尺寸的大面积微纳结构。提出以单子场投影线扫描的方式进一步改善由于光场能量分布不均匀引起的结构边缘粗糙的问题,极大地降低了线条的边缘粗糙度,有效地控制了结构的精度。本研究以半导体领域常用的正性光刻胶为主要研究对象,实现了面积为7.4 mm 2的1μm等间距线阵列和面积为38.7 mm 2的10μm等间距线阵列结构的快速制备。本研究为大面积微纳结构制备提供了一种新方法,所制备结构可应用于气液流动、药物输运及晶体生长等领域。展开更多
We have set up a novel system for shaping the Gaussian laser beams into super-Gaussian beams.The digital micro-mirror device(DMD)is able to modulate the laser light spatially through binary-amplitude modulation mechan...We have set up a novel system for shaping the Gaussian laser beams into super-Gaussian beams.The digital micro-mirror device(DMD)is able to modulate the laser light spatially through binary-amplitude modulation mechanism.With DMD,the irradiance of the laser beam can be redistributed flexibly and various beams with different intensity distribution can be produced.A super-Gaussian beam has been successfully shaped from the Gaussian beam with the use of DMD.This technique will be widely applied in lithography,quantum emulation and holographic optical tweezers which require precise control of beam profile.展开更多
文摘采用数字微镜器件(DMD)无掩模光刻技术,以飞秒激光为光源,结合大面积拼接的方法快速制备了具有较高分辨率和毫米尺寸的大面积微纳结构。提出以单子场投影线扫描的方式进一步改善由于光场能量分布不均匀引起的结构边缘粗糙的问题,极大地降低了线条的边缘粗糙度,有效地控制了结构的精度。本研究以半导体领域常用的正性光刻胶为主要研究对象,实现了面积为7.4 mm 2的1μm等间距线阵列和面积为38.7 mm 2的10μm等间距线阵列结构的快速制备。本研究为大面积微纳结构制备提供了一种新方法,所制备结构可应用于气液流动、药物输运及晶体生长等领域。
基金supported by the National Natural Science Foundation of China(Grant No.60974038)the Project of Provincial Teaching Research in Anhui Institutions of Higher Education(Grant No.2012jyxm006)
文摘We have set up a novel system for shaping the Gaussian laser beams into super-Gaussian beams.The digital micro-mirror device(DMD)is able to modulate the laser light spatially through binary-amplitude modulation mechanism.With DMD,the irradiance of the laser beam can be redistributed flexibly and various beams with different intensity distribution can be produced.A super-Gaussian beam has been successfully shaped from the Gaussian beam with the use of DMD.This technique will be widely applied in lithography,quantum emulation and holographic optical tweezers which require precise control of beam profile.