We report on the experimental observation of the beaming effect in photonic crystals using experimentally mapped spatial field
distributions of energy emitted from a subwavelength photonic crystal waveguide into free-space, rendering with crisp clarity
the diffractionless beaming of energy. Our experimental data agree well with our numerical studies of the beaming enhancement
in photonic crystals with modulated surfaces. Without loss of generality, we study the beaming effect in a photonic crystal
scaled to microwave frequencies and demonstrate the technological capacity to deliver long-range wavelength-scaled beaming
of energy.
PACS 42.70.Qs - 78.20.Bh