Co/Mg/X Multilayer Mirrors For the EUV Range
- Conference date: 15–18 September 2009
- Location: Karlsruhe (Germany)
A new material combination namely Co/Mg multilayer designed for optics applications in the EUV range, is reported. Simulations show that reflectivity value of the Co/Mg multilayer can reach a reflectivity of 55% at 25.2 nm (49.2 eV), when the grazing incidence angle is set to 45° and s polarization is considered. The introduction of additional materials, e.g., Y and Zr can improve the reflectivity to 61%. Co/Mg and multilayers have been deposited following the parameters deduced from the simulations. The introduction of a barrier layer would in principle increase the multilayer reflectivity to 61%. In fact the reflectivity measurements at 0.154 nm show that the introduction of does not improve the structural quality of the multilayers.
- Extreme ultraviolet radiation
- Optical materials
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