METHOD OF MEASURING QUANTITY OF IN-VIVO SUBSTANCE BY USE OF COHERENT ANTI-STOKES RAMAN SCATTERED LIGHT

摘要

A method of measuring the quantity of an in-vivo substance includes the steps of: irradiating an in-vivo substance with two near infrared femtosecond laser beams of different frequencies; detecting coherent anti-Stokes Raman scattered light emitted from the in-vivo substance due to coincidence of the frequency difference between the two near infrared femtosecond laser beams with a natural frequency of the in-vivo substance; and determining the quantity of the in-vivo substance, based on a peak intensity of a Raman scattering spectrum obtained.