WAVELENGTH SELECTIVE DIFFRACTION GRATING, MANUFACTURING METHOD OF WAVELENGTH SELECTIVE DIFFRACTION GRATING, AND OPTICAL APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a wavelength selective diffraction grating which copes with shortening of a wavelength and miniaturization of the grating, and does not require high precision processing in the fabrication of the grating, to provide a manufacturing method of the wavelength selective diffraction grating, and to provide an optical apparatus.;SOLUTION: The wavelength selective diffraction grating 4A includes a transparent substrate 11 and wavelength selective holograms 12 and 13 laminated in order. The wavelength selective hologram 12 diffracts a light beam of a first wavelength. The wavelength selective hologram 13 diffracts a light beam of a second wavelength. The wavelength selective holograms 12 and 13 are manufactured by volume holograms, and a photopolymer is used as a photosensitive material. The photopolymer for the volume holograms mainly comprises a matrix polymer having a first refractive index, a monomer having a second refractive index, a photoreaction initiator, and other additives.;COPYRIGHT: (C)2012,JPO&INPIT