altA new series of graded reflectivity mirrors from REO (Boulder, CO) enables precise spatial shaping of both the intensity and phase characteristics of laser beams. In graded reflectivity mirrors, the reflectivity and/or phase effects of the coating vary radially across the surface of the optic. REO offers these graded reflectivity mirrors on a wide range of substrates including fused silica, various optical glasses, ZnSe, ZnS and Si, for operation over the 266nm to 5µm spectral range. These mirrors are available with diameters from 0.25 inches (6mm) to 5 inches (127mm). Reflectivity pattern variations can be achieved down to a scale of approximately 1mm.

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