Civil/Commercial/Intelligent Sensors
Time:2023-06-20 Views:
Made by laser interference stripe lithography. This type of grating engraving can be done very high, generally between 150g/mm and 3600g/mm. Of course, there are also many special applications that require 6000g/mm or even higher, but it cannot be done very low. Therefore, the holographic grating spectral range is more suitable for the ultraviolet visible near-infrared range, and is not suitable for those larger than 1200nm.
The advantage of holographic gratings is that they can have a high number of lines and are suitable for applications with high resolution requirements. At the same time, they have no ghost lines and very low stray light, making them very suitable for applications such as Raman and fluorescence. The disadvantage is low diffraction efficiency.