Influence of tool geometry on single-crystal CaF2 in an ultra-precision machining

Yuta Mizumoto; Hikaru Amano; Mika Fuchida; Takasumi Tanabe; Yasuhiro Kakinuma

Influence of tool geometry on single-crystal CaF₂ in an ultra-precision machining

Yuta Mizumoto, Hikaru Amano, Mika Fuchida, Takasumi Tanabe, Yasuhiro Kakinuma

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Optical signal processing circuits can realize ultimately efficient signal processing. Optical micro-cavities, which can localize light at certain spots, are important components for the circuits. Single-crystal calcium fluoride (CaF₂) is the most suitable material for highly efficient optical micro-cavities, and ultra-precision cylindrical turning (UPCT) is a feasible fabrication process for CaF₂ optical micro-cavities. However, CaF₂ is characterized by brittleness and crystal anisotropy; therefore, it is necessary to prevent microcracks in UPCT because such cracks would lead to light scattering and cavity performance deterioration. In this study, we conduct plunge-cut tests on CaF₂ substrate with various single point diamond tools, and experimentally investigate the influence of tool geometry and process parameters on critical depth of cut. Based on the experimental results, enhancement of CaF₂ micro-cavity is attempted.

Original language	English
Title of host publication	Proceedings of the 17th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2017
Publisher	euspen
Pages	117-118
Number of pages	2
ISBN (Electronic)	9780995775107
Publication status	Published - 2017 Jan 1
Event	17th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2017 - Hannover, Germany Duration: 2017 May 29 → 2017 Jun 2

Other

Other	17th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2017
Country/Territory	Germany
City	Hannover
Period	17/5/29 → 17/6/2

Keywords

Anisotropy
Optical
Single crystal
Ultra-precision

ASJC Scopus subject areas

Materials Science(all)
Mechanical Engineering
Instrumentation
Industrial and Manufacturing Engineering
Environmental Engineering

Cite this

Influence of tool geometry on single-crystal CaF₂ in an ultra-precision machining. / Mizumoto, Yuta; Amano, Hikaru; Fuchida, Mika et al.
Proceedings of the 17th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2017. euspen, 2017. p. 117-118.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Mizumoto, Y, Amano, H, Fuchida, M, Tanabe, T & Kakinuma, Y 2017, Influence of tool geometry on single-crystal CaF₂ in an ultra-precision machining. in Proceedings of the 17th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2017. euspen, pp. 117-118, 17th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2017, Hannover, Germany, 17/5/29.

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