[10a-PA2-1~11] 3.8 Optical measurement, instrumentation, and sensor

[10a-PA2-5] Low-coherence Tomography Applied to Tomographic Refractive Index Measurement

〇(M1)Yutaro Karasawa¹, Syohei Gunji¹, Tatsutoshi Shioda¹ (1.Saitama Univ.)

Keywords:Low-coherence Tomography, Refractive Index Measurement

We have already shown that the electric field spectroscopy based on the optical tomography by low coherence interference can distinguish each interface signal from the tomographic image of the acquired multilayer sample. It can be realized by applying Fourier and Hilbert transform for the analysis algorithm of the tomographic signals. In this presentation, it is shown that the refractive index spectrum of each layer of the multilayer sample is obtained without measuring the geometric thickness of the sample separately. At this time, the control system of the experimental setup including the supercontinuum light source, which outputs the visible light region, was improved.