Optical Properties of Glass with Trailing Indent Cracks During Chemical Etching

Huapan Xiao (Corresponding Author), Chi Fai Cheung (Corresponding Author), Shenxin Yin, Chunjin Wang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

In this paper, chemical etching experiments were carried out on two K9 glasses with trailing indent cracks (TICs). The surface morphology of etched TICs and the optical properties of the glass with etched TICs are analyzed firstly. The results show that the transmissivity of the glass with TICs initially decreases and then increases with the increase of etching time. Conversely, the reflectivity initially increases and then decreases. This can be attributed to morphological evolution of TICs during chemical etching. Then, based on the fact that TICs are a series of spaced cracks, a simulation model is developed for determining the optical properties of the glass with etched TICs. The model is validated experimentally. It is found that the model is effective when the light wavelength is large and the TICs are uniformly distributed. This research contributes to improving the optical properties of polished optical glasses by chemical etching.
Original languageEnglish
Title of host publicationProceedings of The 10th International Conference of Asian Society for Precision Engineering and Nanotechnology (ASPEN) 2023
Pagese-copy
Number of pages4
Volumee-copy
Publication statusPublished - Nov 2023
EventThe 10th International Conference of Asian Society for Precision Engineering and Nanotechnology (ASPEN 2023) - Hong Kong
Duration: 21 Nov 202324 Nov 2023
https://www.polyu.edu.hk/sklumt/ASPEN2023/about-aspen2023/general-information/

Publication series

NameThe 10th International Conference of Asian Society for Precision Engineering and Nanotechnology (ASPEN 2023)

Conference

ConferenceThe 10th International Conference of Asian Society for Precision Engineering and Nanotechnology (ASPEN 2023)
Abbreviated title(ASPEN 2023)
Period21/11/2324/11/23
Internet address

Keywords

  • Ultra-precision machining
  • Chemical etching
  • Optical properties
  • Glass
  • Trailing indenter cracks

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