Improved the anti-reflection performance and stability of hierarchical micro-nano hybrid structures by annealing method

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The stability and durability of micro-nano structures is the key to influence the structural materials surface towards practical engineering applications. In this paper, the stability of micro-nano structures fabricated by femtosecond laser is systematically studied. It is found that the hierarchical micro-nano hybrid structures seriously affect absorbing properties and stability of the material surface due to the poor crystallinity. In order to enhance efficient optical absorption and stability, the annealing method is applied to further crystallization of the micro-nano structures. As a result, hierarchical micro-nano hybrid structures with large depth-to-width ratios are fabricated. The experimental results demonstrate that an average reflectance of 3.43% is realized in the waveband of 300-2400 nm, and the reduction rate of the reflectance reaches 39.6%. Meanwhile, the water jet impact experiment verifies that the stability of the structure is further improved.

Original languageEnglish
Title of host publicationNineteenth National Conference on Laser Technology and Optoelectronics
EditorsQiang Liu
PublisherSPIE
ISBN (Electronic)9781510683228
DOIs
StatePublished - 2024
Event19th National Conference on Laser Technology and Optoelectronics - Shanghai, China
Duration: 21 Jun 202424 Jun 2024

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume13287
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference19th National Conference on Laser Technology and Optoelectronics
Country/TerritoryChina
CityShanghai
Period21/06/2424/06/24

Keywords

  • Annealing
  • Anti-reflection
  • Femtosecond laser
  • Hierarchical micro-nano hybrid structure
  • Stability

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