title: Circuit-tunable sub-wavelength THz resonators: hybridizing optical cavities and loop antennas.
abstract: We demonstrate subwavelength electromagnetic resonators operating in the THz spectral range, whose spectral properties and spatial/angular patterns can be engineered in a similar way to an electronic circuit. We discuss the device concept, and we experimentally study the tuning of the resonant frequency as a function of variable capacitances and inductances. We then elucidate the optical coupling properties. The radiation pattern, obtained by angle-resolved reflectance, reveals that the system mainly couples to the outside world via a magnetic dipolar interaction.
authors.forename: B
authors.initials: B
authors.lastname: Paulillo
authors.forename: J M
authors.initials: JM
authors.lastname: Manceau
authors.forename: A
authors.initials: A
authors.lastname: Degiron
authors.forename: N
authors.initials: N
authors.lastname: Zerounian
authors.forename: G
authors.initials: G
authors.lastname: Beaudoin
authors.forename: I
authors.initials: I
authors.lastname: Sagnes
authors.forename: R
authors.initials: R
authors.lastname: Colombelli