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Optoelectronics Letters

, Volume 14, Issue 1, pp 21–24 | Cite as

Optical super-resolution effect induced by nonlinear characteristics of graphene oxide films

  • Yong-chuang Zhao (赵永创)
  • Zhong-quan Nie (聂仲泉)Email author
  • Ai-ping Zhai (翟爱平)
  • Yan-ting Tian (田彦婷)
  • Chao Liu (刘超)
  • Chang-kun Shi (史长坤)
  • Bao-hua Jia (贾宝华)
Article

Abstract

In this work, we focus on the optical super-resolution effect induced by strong nonlinear saturation absorption (NSA) of graphene oxide (GO) membranes. The third-order optical nonlinearities are characterized by the canonical Z-scan technique under femtosecond laser (wavelength: 800 nm, pulse width: 100 fs) excitation. Through controlling the applied femtosecond laser energy, NSA of the GO films can be tuned continuously. The GO film is placed at the focal plane as a unique amplitude filter to improve the resolution of the focused field. A multi-layer system model is proposed to present the generation of a deep sub-wavelength spot associated with the nonlinearity of GO films. Moreover, the parameter conditions to achieve the best resolution (∼λ/6) are determined entirely. The demonstrated results here are useful for high density optical recoding and storage, nanolithography, and super-resolution optical imaging.

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Copyright information

© Tianjin University of Technology and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Yong-chuang Zhao (赵永创)
    • 1
  • Zhong-quan Nie (聂仲泉)
    • 1
    Email author
  • Ai-ping Zhai (翟爱平)
    • 1
  • Yan-ting Tian (田彦婷)
    • 1
  • Chao Liu (刘超)
    • 1
  • Chang-kun Shi (史长坤)
    • 1
  • Bao-hua Jia (贾宝华)
    • 1
    • 2
  1. 1.Key Lab of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, College of Physics and OptoelectronicsTaiyuan University of TechnologyTaiyuanChina
  2. 2.Centre for Micro-Photonics, Faculty of Science, Engineering and TechnologySwinburne University of TechnologyMelbourneAustralia

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