title: Printable Nanophotonic Devices via Holographic Laser Ablation.
abstract: Holography plays a significant role in applications such as data storage, light trapping, security, and biosensors. However, conventional fabrication methods remain time-consuming, costly, and complex, limiting the fabrication of holograms and their extensive use. Here, we demonstrate a single-pulse laser ablation technique to write parallel surface gratings and Fresnel zone plates. We utilized a 6 ns high-energy green laser pulse to form interference patterns to record a surface grating with 820 nm periodicity and asymmetric zone plate holograms on 4.5 nm gold-coated substrates. The holographic recording process was completed within seconds. The optical characteristics of the interference patterns have been computationally modeled, and well-ordered polychromatic diffraction was observed from the fabricated holograms. The zone plate showed a significant diffraction angle of 32° from the normal incident for the focal point. The nanosecond laser interference ablation for rapid hologram fabrication holds great potential in a vast range of optical devices.
authors: Microengineering and Nanotechnology Laboratory, School of Mechanical Engineering, University of Birmingham , Edgbaston, Birmingham B15 2TT, United Kingdom.
authors: Qiancheng
authors: Q
authors: Zhao
authors: Harvard Medical School and Wellman Center for Photomedicine, Massachusetts General Hospital , 50 Blossom Street, Boston, Massachusetts 02114, United States.
authors: Ali K
authors: AK
authors: Yetisen
authors: Microengineering and Nanotechnology Laboratory, School of Mechanical Engineering, University of Birmingham , Edgbaston, Birmingham B15 2TT, United Kingdom.
authors: Aydin
authors: A
authors: Sabouri
authors: Harvard Medical School and Wellman Center for Photomedicine, Massachusetts General Hospital , 50 Blossom Street, Boston, Massachusetts 02114, United States.
authors: Seok Hyun
authors: SH
authors: Yun
authors: Microengineering and Nanotechnology Laboratory, School of Mechanical Engineering, University of Birmingham , Edgbaston, Birmingham B15 2TT, United Kingdom.
authors: Haider
authors: H
authors: Butt
keywords: diffraction gratings; holography; laser interference; lenses; zone plates