Blazed Holographic Concave Grating

A blazed concave grating is similar to a standard blazed grating where the groove profile has been modified to increase efficiency in a defined spectral region.

Unlike some other types of blazed holographic concave gratings, the blazed concave gratings produced by Spectrum Scientific are produced using a process that yields a blaze profile that varies across the grating surface, increasing efficiency across the full image plane. Typical efficiencies of >80% are achievable.