Abstract
Graded superlattice quantum cascade lasers have shown high operation performance in the mid-infrared. A similar design has been used for terahertz intersubband emission. Narrow band ( Δν=3 meV ) waveguide emission was observed at an energy of 18.8 meV . The energy spectrum was confirmed by magneto-transport measurements.
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More From: Physica E: Low-dimensional Systems and Nanostructures
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