  Fabrication of metasurfaces is ofthen time consuming and expensive, involving
complex lithographic processes. The maskless fabrication of metasurfaces
composed of rectangular Au bars is reported as a suitable alternative,
providing cost-effective, rapid prototyping of metasurfaces. The investigated
metasurfaces were fabricated using a simple three-step process which is
discussed in detail. The fabrication process establishes a simple method for
producing high fidelity 2D patterns suitable to synthesize metasurfaces for
chemical sensing, beam steering, and perfect reflection/transmission.
Comprehensive polarization-sensitive reflection data reveal multiple resonances
in the infrared spectral range. In addition to the dipole and substrate
resonances, a resonance which is attributed to a coupling between the
excitation of the metasurface and the substrate phonon mode is observed.

Optics