Abstract
The integration of photonic crystals (PC) and quantum-cascade lasers (QCL) can lead to a powerful set of new devices for various applications, such as multi-wavelength laser, detector arrays, on-chip integration and spectroscopy. The PCs are artificial crystals that have allowed and forbidden bands for the propagation of light. Typically PCs are built up by a regular pattern of air holes inside the active region of a QCL. Such structures have a complete bandgap for TE-modes only but not for TM-modes, which is the polarization of the inter-subband transitions in QCLs.
© 2007 IEEE
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