ㆍ Replica gratings from ruled master gratings
ㆍ High absolute efficiency
ㆍ Substrate materials: Fused silica, Zerodur, Pyrex, …
ㆍ Large range of groove densities: from 20 to 1800 gr/mm
ㆍ Multiple spectral range: from UV to IR
ㆍ Available dimensions: many references up to 120x140x20mm
ㆍ Coating : Al.

Fig. 1: Ruled grating

ㆍ Groove frequencies ranging from 120 to 1800 g/mm
ㆍ Spectral ranges: from 190 nm  to 45 microns
ㆍ Diffraction efficiency optimized for UV, or Vis, or IIR
ㆍ Dimensions: from 25x 25 mm to 120 x140 mm
ㆍ For customers in need of larger dimensions, HJY can record a custom-made holographic grating master specifically for replication.

Fig. 2: Typical efficiency curve* for 510 93, 900 l/mm, 300-800 nm

*This efficiency curve is absolute theoretical efficiency, calculated using rigorous electromagnetic theory, taking into account the true groove profiles of manufactured gratings measured with an atomic force microscope (AFM).