Study on IR laser smoothing of ground surface on fused silica

Zhigang Yuan, Yaguo Li, Du Wang, Ting Tan, Huiliang Jin, Qinghua Zhang, Jian Wang, Qiao Xu

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

3 Scopus citations

Abstract

The application of fused silica in the field of High power laser requires that the formation of sub-surface damage be reduced in the process of grinding and polishing. Subsurface damage is unavoidable in traditional processing methods. Laser smoothing, as a non-contact polishing method, has attracted more and more attention in the surface treatment of fused silica. Laser smoothing is capable of producing smooth surface without incurring serious mechanical defects. Thus it is employed to polish fused silica in the hope of reducing mechanical defects on the optical components. In this paper, aiming at the ground surface of fused silica, the characteristics of mid-far infrared laser treatment and modification are studied. The surface smoothness under different laser power are studied, and the optimal laser power and action time for laser smoothing are obtained. This technology can reduce the ground surface roughness from above 100 nanometer to nanometer.

Original languageEnglish
Title of host publicationPacific-Rim Laser Damage 2019
Subtitle of host publicationOptical Materials for High-Power Lasers
EditorsJianda Shao, Takahisa Jitsuno, Wolfgang Rudolph
PublisherSPIE
ISBN (Electronic)9781510628168
DOIs
StatePublished - 2019
Externally publishedYes
EventPacific-Rim Laser Damage 2019: Optical Materials for High-Power Lasers - Qingdao, China
Duration: 19 May 201922 May 2019

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11063
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferencePacific-Rim Laser Damage 2019: Optical Materials for High-Power Lasers
Country/TerritoryChina
CityQingdao
Period19/05/1922/05/19

Keywords

  • Fused silica
  • Ground surface
  • Laser smoothing
  • Surface roughness.

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