| http://www.w3.org/ns/prov#value | - The dielectric materials of the dielectric DBR stack 176 may be suitably metal oxides of the form MOxNy where x and y may be each between 0 and 2 and M may include a metallic element such as silicon, titanium, hafnium, magnesium, aluminum, calcium, vanadium, chromium, yttrium, zirconium, or a rare earth metal.
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