Open AccessTerahertz photonic crystal resonators in double-metal waveguides
Author(s) -
A. Benz,
G. Fasching,
C. Deutsch,
A. M. Andrews,
K. Unterrainer,
P. Klang,
W. Schrenk,
G. Strasser
Publication year - 2007
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.012418
Subject(s) - photonic crystal , lasing threshold , materials science , terahertz radiation , optoelectronics , optics , resonator , yablonovite , laser , photonic integrated circuit , photonics , waveguide , physics , wavelength
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.