The invention belongs to the field of blood
glucose detection, and relates to a high-sensitivity blood glucose noninvasive detection method and
system based on polarized terahertz photoacoustic, which combines the advantages of terahertz
wave band detection and photoacoustic detection, fully utilizes the chiral characteristics of glucose molecules, and adopts polarized terahertz photoacoustic to detect the blood glucose concentration. Polarization
optical rotation change information is extracted through the
time domain photoacoustic
signal; by selecting the characteristic absorption
wave band of glucose and utilizing the difference between glucose and other blood components in chiral characteristics, the influence of water and other high-concentration ions on terahertz signals is remarkably reduced, so that the selectivity and the anti-interference capability of blood
glucose detection are effectively improved; terahertz non-
ionizing radiation is adopted as an excitation source, no ionizing
injury risk is caused to a
human body, and the device is suitable for long-term repeated detection and is expected to be popularized and applied in wearable or bedside monitoring equipment.