title: Athermally photoreduced graphene oxides for three-dimensional holographic images.
abstract: The emerging graphene-based material, an atomic layer of aromatic carbon atoms with exceptional electronic and optical properties, has offered unprecedented prospects for developing flat two-dimensional displaying systems. Here, we show that reduced graphene oxide enabled write-once holograms for wide-angle and full-colour three-dimensional images. This is achieved through the discovery of subwavelength-scale multilevel optical index modulation of athermally reduced graphene oxides by a single femtosecond pulsed beam. This new feature allows for static three-dimensional holographic images with a wide viewing angle up to 52 degrees. In addition, the spectrally flat optical index modulation in reduced graphene oxides enables wavelength-multiplexed holograms for full-colour images. The large and polarization-insensitive phase modulation over π in reduced graphene oxide composites enables to restore vectorial wavefronts of polarization discernible images through the vectorial diffraction of a reconstruction beam. Therefore, our technique can be leveraged to achieve compact and versatile holographic components for controlling light.
authors.affiliation: Centre for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia.
authors.forename: Xiangping
authors.initials: X
authors.lastname: Li
authors.affiliation: Centre for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia.
authors.forename: Haoran
authors.initials: H
authors.lastname: Ren
authors.affiliation: Centre for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia.
authors.forename: Xi
authors.initials: X
authors.lastname: Chen
authors.affiliation: Beijing Engineering Research Center for Mixed Reality and Advanced Display, School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China.
authors.forename: Juan
authors.initials: J
authors.lastname: Liu
authors.affiliation: Environmental Engineering &Queensland Micro- and Nanotechnology Centre, Griffith University, Brisbane, Queensland 4111, Australia.
authors.forename: Qin
authors.initials: Q
authors.lastname: Li
authors.affiliation: 1] Centre for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia [2] State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084, China.
authors.forename: Chengmingyue
authors.initials: C
authors.lastname: Li
authors.affiliation: Beijing Engineering Research Center for Mixed Reality and Advanced Display, School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China.
authors.forename: Gaolei
authors.initials: G
authors.lastname: Xue
authors.affiliation: 1] Beijing Engineering Research Center for Mixed Reality and Advanced Display, School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China [2] State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084, China.
authors.forename: Jia
authors.initials: J
authors.lastname: Jia
authors.affiliation: State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084, China.
authors.forename: Liangcai
authors.initials: L
authors.lastname: Cao
authors.affiliation: Centre for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia.
authors.forename: Amit
authors.initials: A
authors.lastname: Sahu
authors.affiliation: Beijing Engineering Research Center for Mixed Reality and Advanced Display, School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China.
authors.forename: Bin
authors.initials: B
authors.lastname: Hu
authors.affiliation: Beijing Engineering Research Center for Mixed Reality and Advanced Display, School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China.
authors.forename: Yongtian
authors.initials: Y
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084, China.
authors.forename: Guofan
authors.initials: G
authors.lastname: Jin
authors.affiliation: Centre for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia.
authors.forename: Min
authors.initials: M
authors.lastname: Gu