Patent ID: 7999934

Claim:
A Raman spectroscopic device for use in Raman spectroscopy, in which a measuring light beam of a particular wavelength is irradiated onto a sample in contact with a light scattering surface, Raman scattered light generated at the light scattering surface is spectrally decomposed, and is employed for detecting a detection target substance in the sample, in the form of an optical resonator, comprising: a first reflecting body that exhibits semi transmissivity/semi reflectivity and has a surface which is the light scattering surface for generating Raman scattering; a transparent body; and a second reflecting body that exhibits reflectivity, laminated in sequence one on another; whereby the intensity of the Raman scattered light is amplified by the amplified electric field at the light scattering surface by light absorption, generated by resonance in the optical resonator upon irradiation of the measuring light beam, wherein: the first reflecting body has a structure of protrusions and recesses, which are smaller than the wavelength of the measuring light beam to be irradiated onto the light scattering surface.