title: Terahertz photonic crystal resonators in double-metal waveguides.
abstract: We present the design and the fabrication of photonic crystals with a complete bandgap for TM-modes used as a resonator for terahertz quantum-cascade lasers (QCL), which are lasing around 2.7 THz. The emission of the devices with and without a photonic crystal shows a shift in the emission from the gain maximum to the bandgap of the crystal. The devices are built up by a core, which provides the optical gain, and by a surrounding photonic crystal, which acts as a frequency selective mirror. The whole device is processed into a double-metal waveguide.
authors: A
authors: A
authors: Benz
authors: G
authors: G
authors: Fasching
authors: Ch
authors: Ch
authors: Deutsch
authors: A M
authors: AM
authors: Andrews
authors: K
authors: K
authors: Unterrainer
authors: P
authors: P
authors: Klang
authors: W
authors: W
authors: Schrenk
authors: G
authors: G
authors: Strasser