Vorrichtung und Verfahren zur intrakavitären Messung der makroskopischen Eigenschaften von Chemikalien

摘要

The device includes a light source, an optical resonator that has a resonance cavity for light generated by the light source, a total internal reflection (TIR) member that is located within the resonance cavity and has a TIR surface. E.g. the light passes into the TIR member and is reflected without loss by the TIR surface, with an angle of incidence greater than a critical angle A sample is positioned to extend within an evanescent field region at the TIR surface. The device further includes detection device for non absorption type detecting a set macroscopic optical characteristic of the sample corresp to the amount of the target substance that is in the sample in the evanescent field region.