Surface plasmon sensor, the incident angle calculation unit, a surface plasmon sensor system, the incident angle calculation program, and the incident angle calculation program computer-readable recording medium recording the

摘要

PROBLEM TO BE SOLVED: To correct a measurement error due to tilt and height change in a sensor chip by using a simple configuration, when exchanging the sensor chip.;SOLUTION: A system includes; a prism 5 having translucency to a wavelength of a light beam 12 emitted from a light source 2; a metal film 6a formed on a surface of the prism 5 on the opposite side of the incidence side of the light beam 12; a dielectric film 6b formed on the first metal film 6a; a second metal film 6c formed on the dielectric film 6b; and a photodetector 8 for detecting reflection light generated by multiple reflections of the light beam 12 passing through the prism 5 at incidence angles of a prescribed range on all interfaces which are formed between the prism 5 and the first metal film 6a, between the first metal film 6a and the dielectric film 6b, between the dielectric film 6b and the second metal film 6c, and between the second metal film 6c and a sample 13. The reflection coefficient of the reflection light detected by the photodetector 8 contains three or more local minimal values.;COPYRIGHT: (C)2010,JPO&INPIT