Abstract
Improved designs of surface plasmon waveguides for use in GaAs/AlGaAs terahertz quantum cascade lasers are presented. Modal losses and confinement factors are calculated for TM modes in metal-variably doped multilayer semiconductor and metal-intermetallic compound layer clad structures and compared with those obtained in recently realized metal-highly doped semiconductor clad layer structures. Considerable improvements of the mode confinement factors are predicted, and guidelines for choosing the confinement layer parameters are given.
Original language | English |
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Pages (from-to) | 3249-3252 |
Number of pages | 4 |
Journal | Journal of Applied Physics |
Volume | 94 |
Issue number | 5 |
Early online date | 19 Aug 2003 |
DOIs | |
Publication status | Published - 1 Sep 2003 |
Externally published | Yes |