Raman scattered light measuring apparatus

摘要

A Raman scattered light measuring apparatus comprises a near infrared semiconductor laser diode(1a) as a light source for irradiating a sample with excitation light, while a photoreceiving part for receiving Raman scattered light from the sample comprises a bandpass filter(6) having a vibration wavenumber which is specific to a sample component to be measured as a central wavelength of its transmission region, and a detector(7a) consisting of a photodiode of Ge, InAs or InGaAs or a photomultiplier having sensitivity in a near infrared region for detecting Raman scattered light which is transmitted through the bandpass filter(6).