200–400 nm UV Transmission Grating

The 200-400 nm UV transmission grating is a high-line-density transmission-type diffraction grating designed for UV spectral analysis applications. It uses a fused silica substrate and a surface-relief etched structure, with an operating wavelength range covering 200–400 nm. The product has a high line density of 2846.9 lines/mm. Its typical angular dispersion at 300 nm can reach 0.21°/nm, enabling good wavelength separation capability. With relatively high diffraction efficiency, low polarization dependence, low thermal expansion, and a compact size design, it can serve as a core spectral dispersion component in UV spectrometers and OEM spectral modules. It is suitable for applications such as scientific research, industrial inspection, and precision spectral analysis.