Hellma Cells is offering holographically and mechanically ruled gratings from Carl Zeiss. Holographic styles include sinusoidal, echelette and laminar types with wavelengths ranging from 4 nm to 1 µm. These are suitable for spectrometers and monochromators for NIR to UV and synchrotron radiation. Mechanical versions include sawtooth and amplitude types with wavelengths from 4 nm to 25 µm. These gratings can be used for spectrometers and monochromators for high-power lasers.