ㆍ Replica gratings from blazed master holographic gratings
ㆍ Perfect periodicity and excellent microroughness
ㆍ Elimination of ghosts and low stray light
ㆍ Substrate materials: Fused silica, Zerodur, Pyrex…
ㆍ Large range of groove densities : from 600 to 2400gr/mm
ㆍ Multiple spectral range : from UV to NIR
ㆍ Available dimensions: many references up to 120x140x20mm
ㆍ Coating: Al.

Fig. 1: Triangular holographically recorded and ion etched groove profile

ㆍ Groove frequencies ranging from 600 to 2400 g/mm
ㆍ Spectral ranges: from 190 to 1750 nm
ㆍ Diffraction efficiency optimized for UV, or Vis, or NIR
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 curves* for 530 13, 2400 l/mm, 190-700 nm

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