Energy harvesting devices for harvesting energy from terahertz electromagnetic radiation

An energy harvesting device, comprising:

• at least a first resonance element being sized and configured to have a resonant frequency between 20 THz and approximately 1,000 THz;
• and
• at least a second resonance element being sized and configured to have a resonant frequency different from the resonant frequency of the at least a first resonance element, wherein a first optical resonance gap extends a distance between a ground plane and the at least a first resonance element approximately one-quarter wavelength of a wavelength of the at least a first resonance element's resonant frequency.

An energy harvesting device, comprising:

• at least a first resonance element being sized and configured to have a resonant frequency between 20 THz and approximately 1,000 THz;
• and
• at least a second resonance element being sized and configured to have a resonant frequency different from the resonant frequency of the at least a first resonance element, wherein the at least a first resonance element is spaced from a ground plane a first distance to define a first optical resonance gap and the at least a second resonance element is spaced from the ground plane a second distance to define a second optical resonance gap different than the first optical resonance gap.