[20p-A25-1~7] 3.3 Biomedical optics

3:00 PM - 3:15 PM JST(6:00 AM - 6:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[20p-A25-7] Investigation of a Mid-infrared Photothermal Deflection Spectroscopy System for Biological Tissue Analysis

〇(DC)Hiroto Ito¹, Saiko Kino¹, Mitsuru Tomita², Matsuura Yuji¹ (1.Tohoku Univ., 2.Nippon Electric Glass Co., Ltd.)

Keywords:

Mid-infrared spectroscopy,Biological Tissue Analysis

Photothermal deflection spectroscopy, which detects the heat generated when a sample absorbs mid-infrared light as a change in the refractive index of a prism in contact with the sample, is expected to be a non-invasive method for analysis of biological components. Previously, a method of total reflection of the probe light on the inner surface of a prism near the irradiation point of mid-infrared light was used, but this method requires precise optical-axis adjustment and the signal intensity changes with slight changes in the measurement point. In this report, we propose a simple measurement method in which the probe light passes horizontally near the prism surface and investigate the introduction of an infrared-transmitting glass prism that is harmless to the human body and easy to mass-produce.