Effective wavelength scaling of rectangular aperture antennas

Area of Science:

• Optics and Photonics
• Antenna Theory
• Nanophotonics

Background:

• Aperture antennas are crucial components in various optical and terahertz applications.
• Understanding their resonant behavior across a broad spectrum is essential for device design.

Purpose of the Study:

• To investigate and characterize the resonant behavior of aperture antennas.
• To develop a simple analytic model for wavelength scaling from visible to terahertz frequencies.

Main Methods:

• Experimental investigation of aperture antenna resonances.
• Comparison with comprehensive electromagnetic simulations.
• Analysis of wavelength scaling behavior across the spectrum.

Main Results:

• Identified simple piecewise analytic behavior for wavelength scaling.
• Observed a linear regime for wavelength scaling in the visible and near-infrared spectrum.
• Validated findings through simulations.

Conclusions:

• The developed analytic theory offers a straightforward design tool for aperture antennas.
• Applicable to advanced fields such as biosensors, nonlinear plasmonics, and surface-enhanced spectroscopies.