Quantitative Measurement of Biological Substances by Little-fi nger-size and Extremely-Compact Spectral Tomographic Imaging

Abstract

We propose the one-shot-type spectroscopic-tomography for medical-patient-condition monitoring systems in daily-life environment, such as non-invasive blood-glucose sensor. We proposed the 2-dimensional imaging-type Fourier-spectroscopy that can limit the measuring depth into focal plane and is a near common-path interferometer with high robustness for mechanical vibration. Because the proposed 2-dimensional imaging-type Fourier-spectroscopy is a wavefront-division-type interferometer, we could acquire the spectroscopic tomography by scanning focal plane into depth direction. To improve the time resolution for living tissues, we develop the time-domain phase-shift method into a spatial phase-shift interferometer by installing the transmission-type relativeinclined phase-shifter into optical Fourier transform plane. In this report, we demonstrate the feasibility of the one-shot-type spectroscopic-tomography.