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(Color online) Conduction band diagrams of the two designs that have been used, labeled α and β. The upper laser level (2), lower laser level (1), and injector state (i) are all highlighted. Each design is calculated with an applied electric field of 1.8 kV cm−1.
(Color online) Experimental results from the design α and β grown and processed as separate lasers. Each device was 3 mm long and 250 μm wide.
(Color online) (a) Pulsed LIVs at various temperatures for the heterogeneous single plasmon device, the duty cycle was 1% and the emission was measured with a Golay cell. (b) Pulsed spectra from the same device.
(Color online) Spectra gain measured from a single plasmon waveguide using THz TDS. The device was powered in pulsed mode with a 25% duty cycle and a heat sink temperature of 10 K. (a) Gain spectra at 2.6 THz and 2.9 THz as a function of current and (b) the spectral gain at selected currents.
(Color online) Laser spectra from a metal-metal heterogeneous device operating in CW. The ridge is 1.83 mm long and 250 μm wide.
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