title: Maskless laser tailoring of conical pillar arrays for antireflective biomimetic surfaces.
abstract: Herein, we report a facile approach for rapid and maskless production of subwavelength structured antireflective surfaces with high and broadband transmittance-direct laser interference ablation. The interfered laser beams were introduced into the surface of a bare optical substrate, where structured surfaces consisting of a micropillar array were produced by two-step laser irradiation in the time frame of seconds. A multiple exposure of the two-beam interference approach was proposed instead of multiple-beam interference to simply realize planar patterns of a high aspect ratio. Tall sinusoidal pillars were created and shaped by pulse shot number control. As an example of the application, zinc sulfide substrates were processed with the technology, from which high transmission at an infrared wavelength, over 92%, at normal incidence was experimentally achieved.
authors: State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, China.
authors: Lei
authors: L
authors: Wang
authors: Bin-Bin
authors: BB
authors: Xu
authors: Qi-Dai
authors: QD
authors: Chen
authors: Zhuo-Chen
authors: ZC
authors: Ma
authors: Ran
authors: R
authors: Zhang
authors: Qing-Xue
authors: QX
authors: Liu
authors: Hong-Bo
authors: HB
authors: Sun
mesh_terms: D000042:Absorption; D032701:Biomimetics / Q000295:instrumentation*; D007834:Lasers; D055620:Optical Phenomena; D013440:Sulfides / Q000737:chemistry; D013499:Surface Properties; D013997:Time Factors; D017967:Zinc Compounds / Q000737:chemistry
chemical_list: D013440:Sulfides; D017967:Zinc Compounds; C031238:zinc sulfide