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Fused silica contamination layer removal using magnetic field‐assisted finishing
Author(s) -
Long Julian,
Ross Daniel,
Tastepe Erik,
Lamb Mikayla,
Funamoto Yusuke,
Shima Daichi,
Kamimura Tomosumi,
Yamaguchi Hitomi
Publication year - 2020
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.17000
Subject(s) - polishing , contamination , materials science , layer (electronics) , abrasive , surface roughness , laser , composite material , optics , ecology , physics , biology
Abstract Fused silica optics used in lasing systems requires a high laser‐induced damage resistance. Processes typically used to polish fused silica lenses induce subsurface and surface damage that collect ceria abrasive, creating a layer of contamination. The contamination can be a precursor to laser damage during use. A preliminary study showed the feasibility of magnetic field‐assisted finishing (MAF) for polishing fused silica and suggested possible beneficial effects of the MAF‐polished surface on the laser‐induced damage threshold (LIDT). This paper proposes a method to examine the fundamental polishing characteristics of MAF for fused silica. Using the proposed method, this paper explores the material removal characteristics of the MAF process and improves the understanding of the MAF polishing mechanism. The 45% improvement of LIDT shows the efficacy of MAF for removing the contamination layer of fused silica surfaces with minimal changes in the surface roughness.