Holographic Rowland Gratings

Rowland holographic grating combines the functions of dispersion and focusing. If the fringes are projected on a tangential plane passing the center of the grating, the projections have equal distance and are parallel. Its geometric optical properties are the same as ruled gratings and are changeable with them.

Holographic Rowland Gratings

CodeConcave radius(mm)Grooves Per mmWavelength range(nm)DimensionCoating
30-0160303380-720φ39Al
30-11112.21200200-80032x32Al
30-12130.2150500-700φ70Al
30-13130.2150500-700φ90Al
30-14201.42400200-40058x58Al
30-15201.42400200-40030x30Al
30-16201.41200200-60058x58Al
30-17201.41200340-80030x30Al
30-18201.4600400-70030x30Al
30-19201.4600400-70058x58Al
30-20498.13600100-30030x30Al+MgF2
30-21498.13600150-450φ63.5Al+MgF2
30-22498.12700120-400φ50.8Al+MgF2
30-23498.12400100-30030x30Al+MgF2
30-24498.12400200-40030x30Al
30-25498.11200170-700φ50.8Al+MgF2
30-26498.11200340-800φ50.8Al
30-277502400170-600φ63.5Al+MgF2
30-287501200170-700φ63.5Al+MgF2
30-29750600400-700φ63.5Al
30-30998.83600150-450φ63.5Al+MgF2
30-31998.82400100-300φ63.5Al+MgF2
30-32998.82160170-450φ63.5Al+MgF2
30-33998.81080170-800φ63.5Al+MgF2
30-34998.81080337-815φ63.5Al
30-3515003600160-450φ63.5Al+MgF2
30-3615002400160-450φ63.5Al+MgF2
30-3715002400200-650φ63.5Al+MgF2
30-3815001200170-700φ63.5Al+MgF2

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Groove Density:
lines/mm
Blazing Wavelength (λb):
um
Incident Angle:
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Wavelength Range:
to
um
Efficiency @ λb:
@TM
@TE
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Substrate Radius:
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Substrate Size(LxWxH):
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