Flat diffraction grating

high-quality holographic

Knight Optical’s high quality holographic research range of diffraction gratings are used to separate white light into its component wavelengths. This type of grating has lower stray-light levels than ruled gratings and are available in closer rulings. Blazed holographics are also available with a similar profile and efficiency to ruled types, for use at UV wavelengths. The manufacturing process differs to that of ruled gratings, allowing for closer lines with less structure error and hence less stray light. The improved performance of these holographic gratings makes them ideal for spectroscopy applications in the instrumentation and medical testing sectors, where efficient and high performance are required. Efficiency curves are available on request.