Device for converting electromagnetic radiation into electricity, and related systems and methods

A method for converting nonuniform laser light into electricity, comprising:

• receiving a beam of non-uniform laser light at an expander having an axis and having a reflective surface, wherein the reflective surface has a substantially pyramidal shape characterized in that each cross-section of the shape in a plane perpendicular to the axis is a polygon having a selected number of sides, wherein the selected number of sides is the same for each cross-section of the surface, and the reflective surface includes multiple angles relative to the axis, the multiple angles selected to expand the beam of nonuniform laser light into an expanded beam;
• and
• reflecting the expanded beam from the expander toward a plurality of energy conversion components disposed to receive the expanded beam and configured to generate electricity from the expanded beam,
• wherein the multiple angles are selected to change a spatial distribution of the nonuniform laser light of the beam between the reflective surface and a member of the plurality of energy conversion components from a less uniform distribution to a more uniform distribution.