Laser systems for material analysis based on reflectance ratio detection

摘要: Systems and methods for non-invasive material analysis are disclosed in which a (e.g., liquid such as blood) is illuminated at plurality of discrete wavelengths. Measurements the intensity reflected light wavelengths taken, an reflection ratios various performed. Changes can be correlated with specific properties concentration analytes oxygen content, glucose levels, cholesterol or drugs subject's circulatory system).