Ductile-mode Cutting of Glass using Fly Cutting (2nd report)

Observation of Machined Surface of silica glass using Confocal Scanning Laser Microscope with a Raman Spectroscopy Interface

Abstract

Fly cutting allows the glass to be cut 10 times more in depth than turning in ductile-mode. In this research, synthetic fused silica work pieces were machined by fly cutting with an ultra-precision lathe and machined area were observed by Confocal Scanning Laser Microscope with a Raman Spectroscopy Interface. Different spectra were observed from the machined area and optically polished surface of fused silica. Moreover, fluorescence was observed on the machined area by excitation with UV laser (wavelength: 266 nm).