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Coatings

MHR

MHR

    Rising EO can offer MHR coatings made of Au, Cu, Ag, Al, Cr, or Ni-CR. These coatings are applied where a consistent high reflection over wide spectral range.

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1.UV-Al:
Only this metal mirror can be used to UV spectrum
2.Protected-MHR:
MAL, MAu and MAg are three types of Protected MHR
1)MAL can be used in VIR and IR spectrum, has good mechanical durability.
2)MAu can be used in IR spectrum
3)MAg used in VIR and IR, has the highest reflectance in metal mirror, but its mechanical durability is low, can’t be used long time.
3.Enhanced-MHR:
Add some dielectric layers on the metal, to improve the reflectance at a wide wavelength range.
SpecProtective GoldProtective AluminumUV Enhanced AluminumProtective Silver
Wavelength750-1500nm400-700nm200-700nm500-800nm
Reflective>96%>88%>85%98%
Surface FlatnessLambda/4Lambda/4Lambda/4Lambda/4
Surface Quality60-40 S/D60-40 S/D60-40 S/D60-40 S/D
Damage Threshold0.8J/cm²0.3J/cm²0.3J/cm²0.5J/cm²

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