Presentation Information
[10p-E201-3]Kretschmann-type surface plasmon sensor excited at normal incidence using BK7 prism
〇Hayato Otsu1, Maria Vanessa Balois-Oguchi1, Kotaro Kajikawa1 (1.Science Tokyo)
Keywords:
surface plasmon
Conventional surface plasmon resonance (SPR) sensors require a rotating mechanism due to the need for oblique incident light, making miniaturization a challenge. In this study, we propose a sensor that can excite SPR with perpendicular incident light using standard optical glass (BK7). In experiments using water and ethanol, we observed a shift in the resonance wavelength in response to changes in concentration, confirming the sensor’s functionality. Since this method does not require a rotating mechanism, the device offers excellent miniaturization and portability, and is expected to be applied to measurements in outdoor and on-site environments.