使用直接激光写入法制造微轴棱锥镜

Fabrication of micro-axicons using direct-laser writing.

作者信息

Huang He, Chen Shijie, Zou Hongmei, Li Qing, Fu Jian, Lin Feng, Wu X

出版信息

Opt Express. 2014 May 5;22(9):11035-42. doi: 10.1364/OE.22.011035.

DOI:10.1364/OE.22.011035

Abstract

A novel direct-laser writing fabrication process for micro-axicons is demonstrated. A fiber-axicon-generated Bessel beam was utilized to write on UV-curable optical epoxy to form new axicons and axicon arrays, and geometrical parameters of the replicated epoxy axicons were analyzed in terms of both apex angle and proximity of the writing axicons. The shape of the fabricated axicons was demonstrated to be controllable through laser exposure, proximity, and apex angle of the source axicon, and the fabricated axicons are capable of generating a quality Bessel beam with an excellent focusing performance.

摘要

展示了一种用于微轴棱锥镜的新型直接激光写入制造工艺。利用光纤轴棱锥镜产生的贝塞尔光束在可紫外固化的光学环氧树脂上进行写入，以形成新的轴棱锥镜和轴棱锥镜阵列，并从顶角和写入轴棱锥镜的间距两方面分析了复制的环氧树脂轴棱锥镜的几何参数。结果表明，通过激光曝光、间距和源轴棱锥镜的顶角可以控制所制造轴棱锥镜的形状，并且所制造的轴棱锥镜能够产生具有优异聚焦性能的高质量贝塞尔光束。