Purpose:
- It is the main optical element for the extraction of a given wavelength in various spectral optical devices, such as monochromators and spectrographs, which are intended for scientific research and production needs.
- Spatial spectral filtration of radiation.
- Compression of laser pulses.

Technologies used:
- Manufacturing technology holographic method.
- Technology of copying diffraction elements using polyester resins.
- Technology of vacuum deposition of reflective metal coatings.

Benefits:
- High frequency strokes.
- Large working surface size.
- Absence of false spectral lines (Spirits of Rowland and Lyman).
- Low level of scattered light.
- Ability to produce curvilinear strokes and strokes with a variable period.